2161393142 has 16 divisors (see below), whose sum is σ = 3368552400. Its totient is φ = 1038868320.

The previous prime is 2161393121. The next prime is 2161393181. The reversal of 2161393142 is 2413931612.

2161393142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2161393099 and 2161393108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68084 + ... + 94647.

It is an arithmetic number, because the mean of its divisors is an integer number (210534525).

Almost surely, 2^2161393142 is an apocalyptic number.

2161393142 is a deficient number, since it is larger than the sum of its proper divisors (1207159258).

2161393142 is a wasteful number, since it uses less digits than its factorization.

2161393142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162991.

The product of its digits is 7776, while the sum is 32.

The square root of 2161393142 is about 46490.7855601516. The cubic root of 2161393142 is about 1292.9386647972.

The spelling of 2161393142 in words is "two billion, one hundred sixty-one million, three hundred ninety-three thousand, one hundred forty-two".