2142178974 has 40 divisors (see below), whose sum is σ = 5169308760. Its totient is φ = 659131344.

The previous prime is 2142178939. The next prime is 2142178999. The reversal of 2142178974 is 4798712412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 506484 + ... + 510695.

It is an arithmetic number, because the mean of its divisors is an integer number (129232719).

Almost surely, 2^2142178974 is an apocalyptic number.

2142178974 is an abundant number, since it is smaller than the sum of its proper divisors (3027129786).

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

2142178974 is a wasteful number, since it uses less digits than its factorization.

2142178974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017206 (or 1017197 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 2142178974 is about 46283.6793481244. The cubic root of 2142178974 is about 1289.0959701749.

The spelling of 2142178974 in words is "two billion, one hundred forty-two million, one hundred seventy-eight thousand, nine hundred seventy-four".