421627257 has 12 divisors (see below), whose sum is σ = 609603904. Its totient is φ = 280814040.

The previous prime is 421627253. The next prime is 421627279. The reversal of 421627257 is 752726124.

It is a happy number.

421627257 is a `hidden beast` number, since 4 + 2 + 1 + 627 + 25 + 7 = 666.

It is not a de Polignac number, because 421627257 - 2² = 421627253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421627253) 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 11 ways as a sum of consecutive naturals, for example, 12469 + ... + 31602.

Almost surely, 2^421627257 is an apocalyptic number.

It is an amenable number.

421627257 is a deficient number, since it is larger than the sum of its proper divisors (187976647).

421627257 is a wasteful number, since it uses less digits than its factorization.

421627257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45140 (or 45137 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 421627257 is about 20533.5641572524. The cubic root of 421627257 is about 749.8531605861.

The spelling of 421627257 in words is "four hundred twenty-one million, six hundred twenty-seven thousand, two hundred fifty-seven".