42544531 has 8 divisors (see below), whose sum is σ = 43997904. Its totient is φ = 41115360.

The previous prime is 42544519. The next prime is 42544543. The reversal of 42544531 is 13544524.

It is an interprime number because it is at equal distance from previous prime (42544519) and next prime (42544543).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42544531 - 2⁵ = 42544499 is a prime.

It is a super-2 number, since 2×42544531² = 3620074236019922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42544531.

It is not an unprimeable number, because it can be changed into a prime (42544031) 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, 2440 + ... + 9541.

It is an arithmetic number, because the mean of its divisors is an integer number (5499738).

Almost surely, 2^42544531 is an apocalyptic number.

42544531 is a deficient number, since it is larger than the sum of its proper divisors (1453373).

42544531 is a wasteful number, since it uses less digits than its factorization.

42544531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12101.

The product of its digits is 9600, while the sum is 28.

The square root of 42544531 is about 6522.6168828163. The cubic root of 42544531 is about 349.0984443266.

The spelling of 42544531 in words is "forty-two million, five hundred forty-four thousand, five hundred thirty-one".