42112557 has 12 divisors (see below), whose sum is σ = 61195680. Its totient is φ = 27905928.

The previous prime is 42112537. The next prime is 42112559. The reversal of 42112557 is 75521124.

It is not a de Polignac number, because 42112557 - 2¹⁵ = 42079789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42112557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42112559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12507 + ... + 15512.

It is an arithmetic number, because the mean of its divisors is an integer number (5099640).

Almost surely, 2^42112557 is an apocalyptic number.

It is an amenable number.

42112557 is a deficient number, since it is larger than the sum of its proper divisors (19083123).

42112557 is a wasteful number, since it uses less digits than its factorization.

42112557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28192 (or 28189 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 42112557 is about 6489.4188491729. The cubic root of 42112557 is about 347.9129042840.

The spelling of 42112557 in words is "forty-two million, one hundred twelve thousand, five hundred fifty-seven".