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142010031 = 3159729641
BaseRepresentation
bin10000111011011…
…10011010101111
3100220012212010210
420131232122233
5242323310111
622031433503
73343031262
oct1035563257
9326185123
10142010031
1173185269
123b685893
1323562207
1414c08cd9
15c7020a6
hex876e6af

142010031 has 8 divisors (see below), whose sum is σ = 189471664. Its totient is φ = 94610880.

The previous prime is 142010023. The next prime is 142010041. The reversal of 142010031 is 130010241.

It is a happy number.

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

It is not a de Polignac number, because 142010031 - 23 = 142010023 is a prime.

It is a super-2 number, since 2×1420100312 = 40333697809241922, 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 = 142009989 and 142010016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142010041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10030 + ... + 19611.

It is an arithmetic number, because the mean of its divisors is an integer number (23683958).

Almost surely, 2142010031 is an apocalyptic number.

142010031 is a deficient number, since it is larger than the sum of its proper divisors (47461633).

142010031 is a wasteful number, since it uses less digits than its factorization.

142010031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31241.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 142010031 is about 11916.7961717905. The cubic root of 142010031 is about 521.7226290249.

Adding to 142010031 its reverse (130010241), we get a palindrome (272020272).

The spelling of 142010031 in words is "one hundred forty-two million, ten thousand, thirty-one".

Divisors: 1 3 1597 4791 29641 88923 47336677 142010031