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142142553 = 33719231721
BaseRepresentation
bin10000111100011…
…10110001011001
3100220110120221000
420132032301121
5242342030203
622034335213
73344122530
oct1036166131
9326416830
10142142553
1173265893
123b72a509
13235aa627
1414c41317
15c72b4a3
hex878ec59

142142553 has 64 divisors (see below), whose sum is σ = 264499200. Its totient is φ = 73560960.

The previous prime is 142142549. The next prime is 142142557. The reversal of 142142553 is 355241241.

142142553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142142549) and next prime (142142557).

It is not a de Polignac number, because 142142553 - 22 = 142142549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (142142557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81733 + ... + 83453.

It is an arithmetic number, because the mean of its divisors is an integer number (4132800).

Almost surely, 2142142553 is an apocalyptic number.

It is an amenable number.

142142553 is a deficient number, since it is larger than the sum of its proper divisors (122356647).

142142553 is a wasteful number, since it uses less digits than its factorization.

142142553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1773 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 142142553 is about 11922.3551784033. The cubic root of 142142553 is about 521.8848669319.

Adding to 142142553 its reverse (355241241), we get a palindrome (497383794).

The spelling of 142142553 in words is "one hundred forty-two million, one hundred forty-two thousand, five hundred fifty-three".

Divisors: 1 3 7 9 19 21 23 27 57 63 69 133 161 171 189 207 399 437 483 513 621 1197 1311 1449 1721 3059 3591 3933 4347 5163 9177 11799 12047 15489 27531 32699 36141 39583 46467 82593 98097 108423 118749 228893 277081 294291 325269 356247 686679 752077 831243 882873 1068741 2060037 2256231 2493729 5264539 6180111 6768693 7481187 15793617 20306079 47380851 142142553