423972045 has 96 divisors (see below), whose sum is σ = 870135552. Its totient is φ = 186955776.

The previous prime is 423972037. The next prime is 423972049. The reversal of 423972045 is 540279324.

It is not a de Polignac number, because 423972045 - 2³ = 423972037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423972049) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1530447 + ... + 1530723.

It is an arithmetic number, because the mean of its divisors is an integer number (9063912).

Almost surely, 2^423972045 is an apocalyptic number.

423972045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423972045 is an abundant number, since it is smaller than the sum of its proper divisors (446163507).

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

423972045 is a wasteful number, since it uses less digits than its factorization.

423972045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 423972045 is about 20590.5814633779. The cubic root of 423972045 is about 751.2406399517.

The spelling of 423972045 in words is "four hundred twenty-three million, nine hundred seventy-two thousand, forty-five".