42739572 has 12 divisors (see below), whose sum is σ = 99725696. Its totient is φ = 14246520.

The previous prime is 42739561. The next prime is 42739573. The reversal of 42739572 is 27593724.

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 42739572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42739573) 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, 1780804 + ... + 1780827.

Almost surely, 2^42739572 is an apocalyptic number.

It is an amenable number.

42739572 is an abundant number, since it is smaller than the sum of its proper divisors (56986124).

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

42739572 is a wasteful number, since it uses less digits than its factorization.

42739572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561638 (or 3561636 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 42739572 is about 6537.5509175837. The cubic root of 42739572 is about 349.6310997509.

The spelling of 42739572 in words is "forty-two million, seven hundred thirty-nine thousand, five hundred seventy-two".