421635452 has 12 divisors (see below), whose sum is σ = 843270960. Its totient is φ = 180700896.

The previous prime is 421635443. The next prime is 421635493. The reversal of 421635452 is 254536124.

421635452 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7529177 + ... + 7529232.

It is an arithmetic number, because the mean of its divisors is an integer number (70272580).

Almost surely, 2^421635452 is an apocalyptic number.

It is an amenable number.

421635452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421635452 is a wasteful number, since it uses less digits than its factorization.

421635452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15058420 (or 15058418 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 421635452 is about 20533.7637076109. The cubic root of 421635452 is about 749.8580187531.

The spelling of 421635452 in words is "four hundred twenty-one million, six hundred thirty-five thousand, four hundred fifty-two".