421047992 has 32 divisors (see below), whose sum is σ = 801964800. Its totient is φ = 207216000.

The previous prime is 421047989. The next prime is 421048003. The reversal of 421047992 is 299740124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144809 + ... + 147687.

It is an arithmetic number, because the mean of its divisors is an integer number (25061400).

Almost surely, 2^421047992 is an apocalyptic number.

It is an amenable number.

421047992 is a deficient number, since it is larger than the sum of its proper divisors (380916808).

421047992 is a wasteful number, since it uses less digits than its factorization.

421047992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167 (or 3163 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 421047992 is about 20519.4539888370. The cubic root of 421047992 is about 749.5096005996.

The spelling of 421047992 in words is "four hundred twenty-one million, forty-seven thousand, nine hundred ninety-two".