421994532 has 24 divisors (see below), whose sum is σ = 984995872. Its totient is φ = 140616000.

The previous prime is 421994477. The next prime is 421994543. The reversal of 421994532 is 235499124.

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, 52032 + ... + 59592.

Almost surely, 2^421994532 is an apocalyptic number.

It is an amenable number.

421994532 is an abundant number, since it is smaller than the sum of its proper divisors (563001340).

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

421994532 is a wasteful number, since it uses less digits than its factorization.

421994532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12219 (or 12217 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 421994532 is about 20542.5054947054. The cubic root of 421994532 is about 750.0708270889.

The spelling of 421994532 in words is "four hundred twenty-one million, nine hundred ninety-four thousand, five hundred thirty-two".