8420723924 has 12 divisors (see below), whose sum is σ = 15511860000. Its totient is φ = 3988763928.

The previous prime is 8420723923. The next prime is 8420723957. The reversal of 8420723924 is 4293270248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420723923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55399424 + ... + 55399575.

It is an arithmetic number, because the mean of its divisors is an integer number (1292655000).

Almost surely, 2^8420723924 is an apocalyptic number.

It is an amenable number.

8420723924 is a deficient number, since it is larger than the sum of its proper divisors (7091136076).

8420723924 is a wasteful number, since it uses less digits than its factorization.

8420723924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110799022 (or 110799020 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 8420723924 is about 91764.5025268486. The cubic root of 8420723924 is about 2034.4630645993.

The spelling of 8420723924 in words is "eight billion, four hundred twenty million, seven hundred twenty-three thousand, nine hundred twenty-four".