2173812942 has 32 divisors (see below), whose sum is σ = 5014310400. Its totient is φ = 615390048.

The previous prime is 2173812887. The next prime is 2173812959. The reversal of 2173812942 is 2492183712.

It is a self number, because there is not a number n which added to its sum of digits gives 2173812942.

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, 232842 + ... + 241997.

It is an arithmetic number, because the mean of its divisors is an integer number (156697200).

Almost surely, 2^2173812942 is an apocalyptic number.

2173812942 is an abundant number, since it is smaller than the sum of its proper divisors (2840497458).

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

2173812942 is a wasteful number, since it uses less digits than its factorization.

2173812942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474960.

The product of its digits is 48384, while the sum is 39.

The square root of 2173812942 is about 46624.1669308954. The cubic root of 2173812942 is about 1295.4104316645.

The spelling of 2173812942 in words is "two billion, one hundred seventy-three million, eight hundred twelve thousand, nine hundred forty-two".