42545532 has 12 divisors (see below), whose sum is σ = 99272936. Its totient is φ = 14181840.

The previous prime is 42545507. The next prime is 42545539. The reversal of 42545532 is 23554524.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 42545532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42545539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1772719 + ... + 1772742.

Almost surely, 2^42545532 is an apocalyptic number.

It is an amenable number.

42545532 is an abundant number, since it is smaller than the sum of its proper divisors (56727404).

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

42545532 is a wasteful number, since it uses less digits than its factorization.

42545532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545468 (or 3545466 counting only the distinct ones).

The product of its digits is 24000, while the sum is 30.

The square root of 42545532 is about 6522.6936153709. The cubic root of 42545532 is about 349.1011822014.

The spelling of 42545532 in words is "forty-two million, five hundred forty-five thousand, five hundred thirty-two".