42424557 has 16 divisors (see below), whose sum is σ = 64757760. Its totient is φ = 24201072.

The previous prime is 42424519. The next prime is 42424561. The reversal of 42424557 is 75542424.

It is not a de Polignac number, because 42424557 - 2⁷ = 42424429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42424517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14244 + ... + 16962.

It is an arithmetic number, because the mean of its divisors is an integer number (4047360).

Almost surely, 2^42424557 is an apocalyptic number.

It is an amenable number.

42424557 is a deficient number, since it is larger than the sum of its proper divisors (22333203).

42424557 is a wasteful number, since it uses less digits than its factorization.

42424557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472.

The product of its digits is 44800, while the sum is 33.

The square root of 42424557 is about 6513.4136211360. The cubic root of 42424557 is about 348.7699871640.

The spelling of 42424557 in words is "forty-two million, four hundred twenty-four thousand, five hundred fifty-seven".