42398972 has 24 divisors (see below), whose sum is σ = 92507520. Its totient is φ = 16518960.

The previous prime is 42398971. The next prime is 42398987. The reversal of 42398972 is 27989324.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42398971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68522 + ... + 69137.

It is an arithmetic number, because the mean of its divisors is an integer number (3854480).

Almost surely, 2^42398972 is an apocalyptic number.

It is an amenable number.

42398972 is an abundant number, since it is smaller than the sum of its proper divisors (50108548).

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

42398972 is a wasteful number, since it uses less digits than its factorization.

42398972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137681 (or 137679 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 42398972 is about 6511.4493010389. The cubic root of 42398972 is about 348.6998620985.

The spelling of 42398972 in words is "forty-two million, three hundred ninety-eight thousand, nine hundred seventy-two".