421256588 has 6 divisors (see below), whose sum is σ = 737199036. Its totient is φ = 210628292.

The previous prime is 421256573. The next prime is 421256593. The reversal of 421256588 is 885652124.

It is a happy number.

It is a super-2 number, since 2×421256588² = 354914225866803488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52657070 + ... + 52657077.

It is an arithmetic number, because the mean of its divisors is an integer number (122866506).

Almost surely, 2^421256588 is an apocalyptic number.

It is an amenable number.

421256588 is a deficient number, since it is larger than the sum of its proper divisors (315942448).

421256588 is a wasteful number, since it uses less digits than its factorization.

421256588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105314151 (or 105314149 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 421256588 is about 20524.5362432382. The cubic root of 421256588 is about 749.6333544202.

The spelling of 421256588 in words is "four hundred twenty-one million, two hundred fifty-six thousand, five hundred eighty-eight".