421100252 has 6 divisors (see below), whose sum is σ = 736925448. Its totient is φ = 210550124.

The previous prime is 421100233. The next prime is 421100269. The reversal of 421100252 is 252001124.

It is a self number, because there is not a number n which added to its sum of digits gives 421100252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52637528 + ... + 52637535.

It is an arithmetic number, because the mean of its divisors is an integer number (122820908).

Almost surely, 2^421100252 is an apocalyptic number.

It is an amenable number.

421100252 is a deficient number, since it is larger than the sum of its proper divisors (315825196).

421100252 is a wasteful number, since it uses less digits than its factorization.

421100252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105275067 (or 105275065 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 421100252 is about 20520.7273750226. The cubic root of 421100252 is about 749.5406087444.

Adding to 421100252 its reverse (252001124), we get a palindrome (673101376).

The spelling of 421100252 in words is "four hundred twenty-one million, one hundred thousand, two hundred fifty-two".