420894424 has 8 divisors (see below), whose sum is σ = 789177060. Its totient is φ = 210447208.

The previous prime is 420894413. The next prime is 420894431. The reversal of 420894424 is 424498024.

It is a tau number, because it is divible by the number of its divisors (8).

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, 26305894 + ... + 26305909.

Almost surely, 2^420894424 is an apocalyptic number.

It is an amenable number.

420894424 is a deficient number, since it is larger than the sum of its proper divisors (368282636).

420894424 is a wasteful number, since it uses less digits than its factorization.

420894424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52611809 (or 52611805 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 420894424 is about 20515.7116376693. The cubic root of 420894424 is about 749.4184671352.

The spelling of 420894424 in words is "four hundred twenty million, eight hundred ninety-four thousand, four hundred twenty-four".