2139925434 has 16 divisors (see below), whose sum is σ = 4327940160. Its totient is φ = 705293600.

The previous prime is 2139925429. The next prime is 2139925441. The reversal of 2139925434 is 4345299312.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 2003142 + ... + 2004209.

It is an arithmetic number, because the mean of its divisors is an integer number (270496260).

Almost surely, 2^2139925434 is an apocalyptic number.

2139925434 is an abundant number, since it is smaller than the sum of its proper divisors (2188014726).

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

2139925434 is a wasteful number, since it uses less digits than its factorization.

2139925434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007445.

The product of its digits is 233280, while the sum is 42.

The square root of 2139925434 is about 46259.3280755352. The cubic root of 2139925434 is about 1288.6437750586.

The spelling of 2139925434 in words is "two billion, one hundred thirty-nine million, nine hundred twenty-five thousand, four hundred thirty-four".