423615420 has 120 divisors (see below), whose sum is σ = 1341648000. Its totient is φ = 111881088.

The previous prime is 423615397. The next prime is 423615433. The reversal of 423615420 is 24516324.

423615420 is a `hidden beast` number, since 4 + 2 + 3 + 615 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 175381 + ... + 177779.

It is an arithmetic number, because the mean of its divisors is an integer number (11180400).

Almost surely, 2^423615420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423615420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (670824000).

423615420 is an abundant number, since it is smaller than the sum of its proper divisors (918032580).

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

423615420 is a wasteful number, since it uses less digits than its factorization.

423615420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529 (or 2518 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 423615420 is about 20581.9197355349. The cubic root of 423615420 is about 751.0299449704.

The spelling of 423615420 in words is "four hundred twenty-three million, six hundred fifteen thousand, four hundred twenty".