421819744 has 24 divisors (see below), whose sum is σ = 831727008. Its totient is φ = 210587520.

The previous prime is 421819709. The next prime is 421819751. The reversal of 421819744 is 447918124.

It is a junction number, because it is equal to n+sod(n) for n = 421819697 and 421819706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11929 + ... + 31399.

It is an arithmetic number, because the mean of its divisors is an integer number (34655292).

Almost surely, 2^421819744 is an apocalyptic number.

It is an amenable number.

421819744 is a deficient number, since it is larger than the sum of its proper divisors (409907264).

421819744 is a wasteful number, since it uses less digits than its factorization.

421819744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20158 (or 20150 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 421819744 is about 20538.2507531679. The cubic root of 421819744 is about 749.9672542740.

The spelling of 421819744 in words is "four hundred twenty-one million, eight hundred nineteen thousand, seven hundred forty-four".