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142131625454 = 27131926133529
BaseRepresentation
bin1000010001011110110…
…1000111110111101110
3111120212101201200011002
42010113231013313232
54312041144003304
6145143330000302
713161103611530
oct2042755076756
9446771650132
10142131625454
1155306662975
1223667716092
13105313a3930
146c4478b850
153a6ce3431e
hex2117b47dee

142131625454 has 96 divisors (see below), whose sum is σ = 277464438720. Its totient is φ = 53166564864.

The previous prime is 142131625453. The next prime is 142131625481. The reversal of 142131625454 is 454526131241.

It is a super-5 number, since 5×1421316254545 (a number of 57 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142131625453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40273562 + ... + 40277090.

It is an arithmetic number, because the mean of its divisors is an integer number (2890254570).

Almost surely, 2142131625454 is an apocalyptic number.

142131625454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

142131625454 is a deficient number, since it is larger than the sum of its proper divisors (135332813266).

142131625454 is a wasteful number, since it uses less digits than its factorization.

142131625454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202 (or 4183 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

Adding to 142131625454 its reverse (454526131241), we get a palindrome (596657756695).

The spelling of 142131625454 in words is "one hundred forty-two billion, one hundred thirty-one million, six hundred twenty-five thousand, four hundred fifty-four".

Divisors: 1 2 7 13 14 19 26 38 91 133 182 247 266 361 494 613 722 1226 1729 2527 3458 3529 4291 4693 5054 7058 7969 8582 9386 11647 15938 23294 24703 32851 45877 49406 55783 65702 67051 81529 91754 111566 134102 151411 163058 221293 302822 321139 442586 469357 642278 871663 938714 1059877 1273969 1549051 1743326 2119754 2163277 2547938 2876809 3098102 4326554 5753618 6101641 8917783 12203282 15142939 16561597 17835566 20137663 28122601 30285878 33123194 40275326 41102263 56245202 82204526 115931179 196858207 231862358 287715841 393716414 534329419 575431682 780942997 1068658838 1561885994 3740305933 5466600979 7480611866 10152258961 10933201958 20304517922 71065812727 142131625454