259232421 has 32 divisors (see below), whose sum is σ = 411494400. Its totient is φ = 142027200.

The previous prime is 259232419. The next prime is 259232443. The reversal of 259232421 is 124232952.

It is not a de Polignac number, because 259232421 - 2¹ = 259232419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259232461) 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, 90550 + ... + 93368.

It is an arithmetic number, because the mean of its divisors is an integer number (12859200).

Almost surely, 2^259232421 is an apocalyptic number.

259232421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

259232421 is a deficient number, since it is larger than the sum of its proper divisors (152261979).

259232421 is a wasteful number, since it uses less digits than its factorization.

259232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009.

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

The square root of 259232421 is about 16100.6962892913. The cubic root of 259232421 is about 637.6217240845.

The spelling of 259232421 in words is "two hundred fifty-nine million, two hundred thirty-two thousand, four hundred twenty-one".