42531179 has 2 divisors, whose sum is σ = 42531180. Its totient is φ = 42531178.

The previous prime is 42531173. The next prime is 42531191. The reversal of 42531179 is 97113524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42531179 - 2²⁰ = 41482603 is a prime.

It is not a weakly prime, because it can be changed into another prime (42531173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21265589 + 21265590.

It is an arithmetic number, because the mean of its divisors is an integer number (21265590).

Almost surely, 2^42531179 is an apocalyptic number.

42531179 is a deficient number, since it is larger than the sum of its proper divisors (1).

42531179 is an equidigital number, since it uses as much as digits as its factorization.

42531179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 42531179 is about 6521.5932869200. The cubic root of 42531179 is about 349.0619206339.

The spelling of 42531179 in words is "forty-two million, five hundred thirty-one thousand, one hundred seventy-nine".