42158131 has 8 divisors (see below), whose sum is σ = 44441600. Its totient is φ = 39881160.

The previous prime is 42158119. The next prime is 42158159. The reversal of 42158131 is 13185124.

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 42158131 - 2⁵ = 42158099 is a prime.

It is a super-2 number, since 2×42158131² = 3554616018826322, 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 = 42158096 and 42158105.

It is not an unprimeable number, because it can be changed into a prime (42158101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17710 + ... + 19948.

It is an arithmetic number, because the mean of its divisors is an integer number (5555200).

Almost surely, 2^42158131 is an apocalyptic number.

42158131 is a deficient number, since it is larger than the sum of its proper divisors (2283469).

42158131 is a wasteful number, since it uses less digits than its factorization.

42158131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249.

The product of its digits is 960, while the sum is 25.

The square root of 42158131 is about 6492.9293081012. The cubic root of 42158131 is about 348.0383622438.

The spelling of 42158131 in words is "forty-two million, one hundred fifty-eight thousand, one hundred thirty-one".