42499072 has 132 divisors (see below), whose sum is σ = 108900400. Its totient is φ = 16558080.

The previous prime is 42499063. The next prime is 42499081. The reversal of 42499072 is 27099424.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (42499063) and next prime (42499081).

It is a super-2 number, since 2×42499072² = 3612342241722368, which contains 22 as substring.

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, 3863547 + ... + 3863557.

Almost surely, 2^42499072 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 42499072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54450200).

42499072 is an abundant number, since it is smaller than the sum of its proper divisors (66401328).

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

42499072 is an equidigital number, since it uses as much as digits as its factorization.

42499072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 42499072 is about 6519.1312304632. The cubic root of 42499072 is about 348.9740623247.

Multiplying 42499072 by its product of nonzero digits (36288), we get a square (1542206324736 = 1241856²).

The spelling of 42499072 in words is "forty-two million, four hundred ninety-nine thousand, seventy-two".