42397432 has 48 divisors (see below), whose sum is σ = 99877680. Its totient is φ = 16515840.

The previous prime is 42397427. The next prime is 42397447. The reversal of 42397432 is 23479324.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3648 + ... + 9904.

It is an arithmetic number, because the mean of its divisors is an integer number (2080785).

Almost surely, 2^42397432 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 42397432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49938840).

42397432 is an abundant number, since it is smaller than the sum of its proper divisors (57480248).

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

42397432 is a wasteful number, since it uses less digits than its factorization.

42397432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6292 (or 6277 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 42397432 is about 6511.3310467216. The cubic root of 42397432 is about 348.6956402643.

The spelling of 42397432 in words is "forty-two million, three hundred ninety-seven thousand, four hundred thirty-two".