421020259 has 16 divisors (see below), whose sum is σ = 487774080. Its totient is φ = 359372160.

The previous prime is 421020247. The next prime is 421020263. The reversal of 421020259 is 952020124.

It is a cyclic number.

It is not a de Polignac number, because 421020259 - 2⁹ = 421019747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421020059) 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 in 15 ways as a sum of consecutive naturals, for example, 14704 + ... + 32530.

It is an arithmetic number, because the mean of its divisors is an integer number (30485880).

Almost surely, 2^421020259 is an apocalyptic number.

421020259 is a deficient number, since it is larger than the sum of its proper divisors (66753821).

421020259 is a wasteful number, since it uses less digits than its factorization.

421020259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17970.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 421020259 is about 20518.7782043668. The cubic root of 421020259 is about 749.4931443551.

The spelling of 421020259 in words is "four hundred twenty-one million, twenty thousand, two hundred fifty-nine".