2139234621 has 8 divisors (see below), whose sum is σ = 2856630624. Its totient is φ = 1423997520.

The previous prime is 2139234611. The next prime is 2139234679. The reversal of 2139234621 is 1264329312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2139234621 - 2⁵ = 2139234589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139234611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537411 + ... + 541376.

It is an arithmetic number, because the mean of its divisors is an integer number (357078828).

Almost surely, 2^2139234621 is an apocalyptic number.

It is an amenable number.

2139234621 is a deficient number, since it is larger than the sum of its proper divisors (717396003).

2139234621 is a wasteful number, since it uses less digits than its factorization.

2139234621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079451.

The product of its digits is 15552, while the sum is 33.

The square root of 2139234621 is about 46251.8607301371. The cubic root of 2139234621 is about 1288.5050930173.

The spelling of 2139234621 in words is "two billion, one hundred thirty-nine million, two hundred thirty-four thousand, six hundred twenty-one".