42052931 has 2 divisors, whose sum is σ = 42052932. Its totient is φ = 42052930.

The previous prime is 42052919. The next prime is 42052939. The reversal of 42052931 is 13925024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42052931 - 2⁶ = 42052867 is a prime.

It is a super-2 number, since 2×42052931² = 3536898011381522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42052931.

It is not a weakly prime, because it can be changed into another prime (42052939) 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 as a sum of consecutive naturals, namely, 21026465 + 21026466.

It is an arithmetic number, because the mean of its divisors is an integer number (21026466).

Almost surely, 2^42052931 is an apocalyptic number.

42052931 is a deficient number, since it is larger than the sum of its proper divisors (1).

42052931 is an equidigital number, since it uses as much as digits as its factorization.

42052931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 42052931 is about 6484.8231278887. The cubic root of 42052931 is about 347.7486266543.

Adding to 42052931 its reverse (13925024), we get a palindrome (55977955).

The spelling of 42052931 in words is "forty-two million, fifty-two thousand, nine hundred thirty-one".