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142433313 = 31131375371
BaseRepresentation
bin10000111110101…
…01110000100001
3100221000100202220
420133111300201
5242430331223
622044501253
73346443321
oct1037256041
9327010686
10142433313
1173444290
123b84a829
132367ca89
1414cb9281
15c7876e3
hex87d5c21

142433313 has 64 divisors (see below), whose sum is σ = 226934784. Its totient is φ = 78624000.

The previous prime is 142433309. The next prime is 142433321. The reversal of 142433313 is 313334241.

It is not a de Polignac number, because 142433313 - 22 = 142433309 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142433363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2006068 + ... + 2006138.

It is an arithmetic number, because the mean of its divisors is an integer number (3545856).

Almost surely, 2142433313 is an apocalyptic number.

It is an amenable number.

142433313 is a deficient number, since it is larger than the sum of its proper divisors (84501471).

142433313 is a wasteful number, since it uses less digits than its factorization.

142433313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its digits is 2592, while the sum is 24.

The square root of 142433313 is about 11934.5428483876. The cubic root of 142433313 is about 522.2404721369.

Adding to 142433313 its reverse (313334241), we get a palindrome (455767554).

The spelling of 142433313 in words is "one hundred forty-two million, four hundred thirty-three thousand, three hundred thirteen".

Divisors: 1 3 11 31 33 37 53 71 93 111 159 213 341 407 583 781 1023 1147 1221 1643 1749 1961 2201 2343 2627 3441 3763 4929 5883 6603 7881 11289 12617 18073 21571 24211 28897 37851 41393 54219 60791 64713 72633 81437 86691 116653 124179 139231 182373 244311 349959 417693 668701 895807 1283183 1531541 2006103 2687421 3849549 4316161 4594623 12948483 47477771 142433313