42077871 has 18 divisors (see below), whose sum is σ = 66808560. Its totient is φ = 25501080.

The previous prime is 42077863. The next prime is 42077887. The reversal of 42077871 is 17877024.

It is not a de Polignac number, because 42077871 - 2³ = 42077863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42077801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18231 + ... + 20408.

Almost surely, 2^42077871 is an apocalyptic number.

42077871 is a deficient number, since it is larger than the sum of its proper divisors (24730689).

42077871 is a wasteful number, since it uses less digits than its factorization.

42077871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38667 (or 38653 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 42077871 is about 6486.7457943101. The cubic root of 42077871 is about 347.8173585801.

The spelling of 42077871 in words is "forty-two million, seventy-seven thousand, eight hundred seventy-one".