421926438 has 16 divisors (see below), whose sum is σ = 849925440. Its totient is φ = 139630056.

The previous prime is 421926397. The next prime is 421926443. The reversal of 421926438 is 834629124.

It is a junction number, because it is equal to n+sod(n) for n = 421926396 and 421926405.

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, 252120 + ... + 253787.

It is an arithmetic number, because the mean of its divisors is an integer number (53120340).

Almost surely, 2^421926438 is an apocalyptic number.

421926438 is an abundant number, since it is smaller than the sum of its proper divisors (427999002).

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

421926438 is a wasteful number, since it uses less digits than its factorization.

421926438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506051.

The product of its digits is 82944, while the sum is 39.

The square root of 421926438 is about 20540.8480350739. The cubic root of 421926438 is about 750.0304805390.

The spelling of 421926438 in words is "four hundred twenty-one million, nine hundred twenty-six thousand, four hundred thirty-eight".