21402141139 has 32 divisors (see below), whose sum is σ = 23391650880. Its totient is φ = 19512410112.

The previous prime is 21402141107. The next prime is 21402141149. The reversal of 21402141139 is 93114120412.

It is a cyclic number.

It is not a de Polignac number, because 21402141139 - 2⁵ = 21402141107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21402141149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31612869 + ... + 31613545.

It is an arithmetic number, because the mean of its divisors is an integer number (730989090).

Almost surely, 2^21402141139 is an apocalyptic number.

21402141139 is a deficient number, since it is larger than the sum of its proper divisors (1989509741).

21402141139 is a wasteful number, since it uses less digits than its factorization.

21402141139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 21402141139 in words is "twenty-one billion, four hundred two million, one hundred forty-one thousand, one hundred thirty-nine".