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142612031 = 1717348491
BaseRepresentation
bin10001000000000…
…01011000111111
3100221100102221002
420200001120333
5243002041111
622052400515
73351116342
oct1040013077
9327312832
10142612031
1173556591
123b91613b
1323713223
1414d24459
15c7c063b
hex880163f

142612031 has 8 divisors (see below), whose sum is σ = 151876944. Its totient is φ = 133444480.

The previous prime is 142612021. The next prime is 142612033. The reversal of 142612031 is 130216241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142612031 - 226 = 75503167 is a prime.

It is a super-2 number, since 2×1426120312 = 40676382771889922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142611994 and 142612012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142612033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21305 + ... + 27186.

It is an arithmetic number, because the mean of its divisors is an integer number (18984618).

Almost surely, 2142612031 is an apocalyptic number.

142612031 is a deficient number, since it is larger than the sum of its proper divisors (9264913).

142612031 is a wasteful number, since it uses less digits than its factorization.

142612031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48681.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 142612031 is about 11942.0279266128. The cubic root of 142612031 is about 522.4588076773.

Adding to 142612031 its reverse (130216241), we get a palindrome (272828272).

The spelling of 142612031 in words is "one hundred forty-two million, six hundred twelve thousand, thirty-one".

Divisors: 1 17 173 2941 48491 824347 8388943 142612031