42974542 has 16 divisors (see below), whose sum is σ = 73074960. Its totient is φ = 18790272.

The previous prime is 42974539. The next prime is 42974543. The reversal of 42974542 is 24547924.

It is a super-2 number, since 2×42974542² = 3693622520219528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42974543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43003 + ... + 43990.

It is an arithmetic number, because the mean of its divisors is an integer number (4567185).

Almost surely, 2^42974542 is an apocalyptic number.

42974542 is a deficient number, since it is larger than the sum of its proper divisors (30100418).

42974542 is a wasteful number, since it uses less digits than its factorization.

42974542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87027.

The product of its digits is 80640, while the sum is 37.

The square root of 42974542 is about 6555.4970826017. The cubic root of 42974542 is about 350.2706532363.

The spelling of 42974542 in words is "forty-two million, nine hundred seventy-four thousand, five hundred forty-two".