42049557 has 48 divisors (see below), whose sum is σ = 69926080. Its totient is φ = 24948000.

The previous prime is 42049541. The next prime is 42049561. The reversal of 42049557 is 75594024.

It is not a de Polignac number, because 42049557 - 2⁴ = 42049541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42049577) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199182 + ... + 199392.

Almost surely, 2^42049557 is an apocalyptic number.

It is an amenable number.

42049557 is a deficient number, since it is larger than the sum of its proper divisors (27876523).

42049557 is a wasteful number, since it uses less digits than its factorization.

42049557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 42049557 is about 6484.5629767934. The cubic root of 42049557 is about 347.7393261908.

The spelling of 42049557 in words is "forty-two million, forty-nine thousand, five hundred fifty-seven".