42990390870 has 32 divisors (see below), whose sum is σ = 117916501248. Its totient is φ = 9826375008.

The previous prime is 42990390851. The next prime is 42990390931. The reversal of 42990390870 is 7809309924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102357864 + ... + 102358283.

It is an arithmetic number, because the mean of its divisors is an integer number (3684890664).

Almost surely, 2^42990390870 is an apocalyptic number.

42990390870 is an abundant number, since it is smaller than the sum of its proper divisors (74926110378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42990390870 is a wasteful number, since it uses less digits than its factorization.

42990390870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204716164.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 42990390870 in words is "forty-two billion, nine hundred ninety million, three hundred ninety thousand, eight hundred seventy".