42538572 has 72 divisors (see below), whose sum is σ = 113498112. Its totient is φ = 13413600.

The previous prime is 42538571. The next prime is 42538583. The reversal of 42538572 is 27583524.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42538571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52047 + ... + 52857.

Almost surely, 2^42538572 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 42538572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56749056).

42538572 is an abundant number, since it is smaller than the sum of its proper divisors (70959540).

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

42538572 is a wasteful number, since it uses less digits than its factorization.

42538572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 894 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 42538572 is about 6522.1600716327. The cubic root of 42538572 is about 349.0821447403.

The spelling of 42538572 in words is "forty-two million, five hundred thirty-eight thousand, five hundred seventy-two".