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142131033 = 321117791069
BaseRepresentation
bin10000111100010…
…11111101011001
3100220110000010100
420132023331121
5242341143113
622034210013
73344044122
oct1036137531
9326400110
10142131033
1173258170
123b723909
13235a5305
1414c3b049
15c727d73
hex878bf59

142131033 has 48 divisors (see below), whose sum is σ = 240364800. Its totient is φ = 79971840.

The previous prime is 142130993. The next prime is 142131047. The reversal of 142131033 is 330131241.

It is not a de Polignac number, because 142131033 - 214 = 142114649 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142130997 and 142131015.

It is not an unprimeable number, because it can be changed into a prime (142131083) 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, 132423 + ... + 133491.

It is an arithmetic number, because the mean of its divisors is an integer number (5007600).

Almost surely, 2142131033 is an apocalyptic number.

It is an amenable number.

142131033 is a deficient number, since it is larger than the sum of its proper divisors (98233767).

142131033 is a wasteful number, since it uses less digits than its factorization.

142131033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1179 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 142131033 is about 11921.8720425947. The cubic root of 142131033 is about 521.8707677618.

Adding to 142131033 its reverse (330131241), we get a palindrome (472262274).

The spelling of 142131033 in words is "one hundred forty-two million, one hundred thirty-one thousand, thirty-three".

Divisors: 1 3 9 11 17 33 51 79 99 153 187 237 561 711 869 1069 1343 1683 2607 3207 4029 7821 9621 11759 12087 14773 18173 35277 44319 54519 84451 105831 132957 163557 199903 253353 599709 760059 928961 1435667 1799127 2786883 4307001 8360649 12921003 15792337 47377011 142131033