2121392142 has 24 divisors (see below), whose sum is σ = 4838263560. Its totient is φ = 669913200.

The previous prime is 2121392099. The next prime is 2121392171. The reversal of 2121392142 is 2412931212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3101109 + ... + 3101792.

It is an arithmetic number, because the mean of its divisors is an integer number (201594315).

Almost surely, 2^2121392142 is an apocalyptic number.

2121392142 is an abundant number, since it is smaller than the sum of its proper divisors (2716871418).

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

2121392142 is a wasteful number, since it uses less digits than its factorization.

2121392142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202928 (or 6202925 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2121392142 is about 46058.5729479323. The cubic root of 2121392142 is about 1284.9127895312.

The spelling of 2121392142 in words is "two billion, one hundred twenty-one million, three hundred ninety-two thousand, one hundred forty-two".