421351052 has 24 divisors (see below), whose sum is σ = 797356224. Its totient is φ = 194062592.

The previous prime is 421351043. The next prime is 421351057. The reversal of 421351052 is 250153124.

It is not an unprimeable number, because it can be changed into a prime (421351057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62723 + ... + 69114.

It is an arithmetic number, because the mean of its divisors is an integer number (33223176).

Almost surely, 2^421351052 is an apocalyptic number.

It is an amenable number.

421351052 is a deficient number, since it is larger than the sum of its proper divisors (376005172).

421351052 is a wasteful number, since it uses less digits than its factorization.

421351052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131905 (or 131903 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 421351052 is about 20526.8373599052. The cubic root of 421351052 is about 749.6893836707.

The spelling of 421351052 in words is "four hundred twenty-one million, three hundred fifty-one thousand, fifty-two".