423651420 has 72 divisors (see below), whose sum is σ = 1312444224. Its totient is φ = 110567808.

The previous prime is 423651359. The next prime is 423651433. The reversal of 423651420 is 24156324.

423651420 is a `hidden beast` number, since 4 + 2 + 3 + 651 + 4 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16579 + ... + 33498.

It is an arithmetic number, because the mean of its divisors is an integer number (18228392).

Almost surely, 2^423651420 is an apocalyptic number.

It is an amenable number.

423651420 is an abundant number, since it is smaller than the sum of its proper divisors (888792804).

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

423651420 is a wasteful number, since it uses less digits than its factorization.

423651420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50139 (or 50134 counting only the distinct ones).

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

The square root of 423651420 is about 20582.7942709439. The cubic root of 423651420 is about 751.0512192291.

The spelling of 423651420 in words is "four hundred twenty-three million, six hundred fifty-one thousand, four hundred twenty".