42052031 has 4 divisors (see below), whose sum is σ = 48059472. Its totient is φ = 36044592.

The previous prime is 42052007. The next prime is 42052039. The reversal of 42052031 is 13025024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42052031 - 2⁶ = 42051967 is a prime.

It is a super-2 number, since 2×42052031² = 3536746622449922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42052039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3003710 + ... + 3003723.

It is an arithmetic number, because the mean of its divisors is an integer number (12014868).

Almost surely, 2^42052031 is an apocalyptic number.

42052031 is a deficient number, since it is larger than the sum of its proper divisors (6007441).

42052031 is an equidigital number, since it uses as much as digits as its factorization.

42052031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007440.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42052031 is about 6484.7537347227. The cubic root of 42052031 is about 347.7461458443.

Adding to 42052031 its reverse (13025024), we get a palindrome (55077055).

The spelling of 42052031 in words is "forty-two million, fifty-two thousand, thirty-one".