423720925 has 24 divisors (see below), whose sum is σ = 539347424. Its totient is φ = 330039360.

The previous prime is 423720911. The next prime is 423720977. The reversal of 423720925 is 529027324.

It is a happy number.

It is not a de Polignac number, because 423720925 - 2⁹ = 423720413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 658654 + ... + 659296.

Almost surely, 2^423720925 is an apocalyptic number.

It is an amenable number.

423720925 is a deficient number, since it is larger than the sum of its proper divisors (115626499).

423720925 is a wasteful number, since it uses less digits than its factorization.

423720925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 423720925 is about 20584.4826264835. The cubic root of 423720925 is about 751.0922899129.

The spelling of 423720925 in words is "four hundred twenty-three million, seven hundred twenty thousand, nine hundred twenty-five".