423105720 has 64 divisors (see below), whose sum is σ = 1270823040. Its totient is φ = 112694400.

The previous prime is 423105719. The next prime is 423105743. The reversal of 423105720 is 27501324.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139015 + ... + 142025.

It is an arithmetic number, because the mean of its divisors is an integer number (19856610).

Almost surely, 2^423105720 is an apocalyptic number.

423105720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423105720 is an abundant number, since it is smaller than the sum of its proper divisors (847717320).

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

423105720 is a wasteful number, since it uses less digits than its factorization.

423105720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196 (or 4192 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 423105720 is about 20569.5337817851. The cubic root of 423105720 is about 750.7286075012.

The spelling of 423105720 in words is "four hundred twenty-three million, one hundred five thousand, seven hundred twenty".