42152031 has 24 divisors (see below), whose sum is σ = 63853920. Its totient is φ = 26744256.

The previous prime is 42152017. The next prime is 42152039. The reversal of 42152031 is 13025124.

It is not a de Polignac number, because 42152031 - 2⁵ = 42151999 is a prime.

It is a super-2 number, since 2×42152031² = 3553587434849922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42151995 and 42152013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42152039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55305 + ... + 56061.

It is an arithmetic number, because the mean of its divisors is an integer number (2660580).

Almost surely, 2^42152031 is an apocalyptic number.

42152031 is a deficient number, since it is larger than the sum of its proper divisors (21701889).

42152031 is a wasteful number, since it uses less digits than its factorization.

42152031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 42152031 is about 6492.4595493542. The cubic root of 42152031 is about 348.0215751586.

Adding to 42152031 its reverse (13025124), we get a palindrome (55177155).

The spelling of 42152031 in words is "forty-two million, one hundred fifty-two thousand, thirty-one".