421995534 has 16 divisors (see below), whose sum is σ = 864576720. Its totient is φ = 137234240.

The previous prime is 421995523. The next prime is 421995551. The reversal of 421995534 is 435599124.

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, 857469 + ... + 857960.

It is an arithmetic number, because the mean of its divisors is an integer number (54036045).

Almost surely, 2^421995534 is an apocalyptic number.

421995534 is an abundant number, since it is smaller than the sum of its proper divisors (442581186).

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

421995534 is a wasteful number, since it uses less digits than its factorization.

421995534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715475.

The product of its digits is 194400, while the sum is 42.

The square root of 421995534 is about 20542.5298831473. The cubic root of 421995534 is about 750.0714207541.

The spelling of 421995534 in words is "four hundred twenty-one million, nine hundred ninety-five thousand, five hundred thirty-four".