2121734042 has 16 divisors (see below), whose sum is σ = 3200578272. Its totient is φ = 1054886640.

The previous prime is 2121734029. The next prime is 2121734053. The reversal of 2121734042 is 2404371212.

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, 438428 + ... + 443240.

It is an arithmetic number, because the mean of its divisors is an integer number (200036142).

Almost surely, 2^2121734042 is an apocalyptic number.

2121734042 is a deficient number, since it is larger than the sum of its proper divisors (1078844230).

2121734042 is a wasteful number, since it uses less digits than its factorization.

2121734042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2121734042 is about 46062.2843767002. The cubic root of 2121734042 is about 1284.9818146578.

The spelling of 2121734042 in words is "two billion, one hundred twenty-one million, seven hundred thirty-four thousand, forty-two".