421596531 has 6 divisors (see below), whose sum is σ = 608972780. Its totient is φ = 281064348.

The previous prime is 421596499. The next prime is 421596541. The reversal of 421596531 is 135695124.

It is not a de Polignac number, because 421596531 - 2⁵ = 421596499 is a prime.

It is a super-2 number, since 2×421596531² = 355487269902467922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421596541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23422021 + ... + 23422038.

Almost surely, 2^421596531 is an apocalyptic number.

421596531 is a deficient number, since it is larger than the sum of its proper divisors (187376249).

421596531 is a wasteful number, since it uses less digits than its factorization.

421596531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46844065 (or 46844062 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 421596531 is about 20532.8159539796. The cubic root of 421596531 is about 749.8349450118.

The spelling of 421596531 in words is "four hundred twenty-one million, five hundred ninety-six thousand, five hundred thirty-one".