42591423 has 32 divisors (see below), whose sum is σ = 68428800. Its totient is φ = 23037696.

The previous prime is 42591391. The next prime is 42591467. The reversal of 42591423 is 32419524.

It is not a de Polignac number, because 42591423 - 2⁵ = 42591391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42591223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52243 + ... + 53051.

It is an arithmetic number, because the mean of its divisors is an integer number (2138400).

Almost surely, 2^42591423 is an apocalyptic number.

42591423 is a deficient number, since it is larger than the sum of its proper divisors (25837377).

42591423 is a wasteful number, since it uses less digits than its factorization.

42591423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 8640, while the sum is 30.

The square root of 42591423 is about 6526.2104624353. The cubic root of 42591423 is about 349.2266544107.

The spelling of 42591423 in words is "forty-two million, five hundred ninety-one thousand, four hundred twenty-three".