42070887 has 32 divisors (see below), whose sum is σ = 66831360. Its totient is φ = 26088480.

The previous prime is 42070871. The next prime is 42070913. The reversal of 42070887 is 78807024.

It is not a de Polignac number, because 42070887 - 2⁴ = 42070871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42070867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22062 + ... + 23892.

It is an arithmetic number, because the mean of its divisors is an integer number (2088480).

Almost surely, 2^42070887 is an apocalyptic number.

42070887 is a deficient number, since it is larger than the sum of its proper divisors (24760473).

42070887 is a wasteful number, since it uses less digits than its factorization.

42070887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 42070887 is about 6486.2074434912. The cubic root of 42070887 is about 347.7981141746.

The spelling of 42070887 in words is "forty-two million, seventy thousand, eight hundred eighty-seven".