42572542 has 4 divisors (see below), whose sum is σ = 63858816. Its totient is φ = 21286270.

The previous prime is 42572513. The next prime is 42572561. The reversal of 42572542 is 24527524.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10643134 + ... + 10643137.

It is an arithmetic number, because the mean of its divisors is an integer number (15964704).

Almost surely, 2^42572542 is an apocalyptic number.

42572542 is a deficient number, since it is larger than the sum of its proper divisors (21286274).

42572542 is a wasteful number, since it uses less digits than its factorization.

42572542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21286273.

The product of its digits is 22400, while the sum is 31.

The square root of 42572542 is about 6524.7637505124. The cubic root of 42572542 is about 349.1750421174.

The spelling of 42572542 in words is "forty-two million, five hundred seventy-two thousand, five hundred forty-two".