139861834127 has 12 divisors (see below), whose sum is σ = 147230860008. Its totient is φ = 132762657600.

The previous prime is 139861834111. The next prime is 139861834141. The reversal of 139861834127 is 721438168931.

It is not a de Polignac number, because 139861834127 - 2⁴ = 139861834111 is a prime.

It is a super-2 number, since 2×139861834127² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139861834157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062149 + ... + 1186542.

It is an arithmetic number, because the mean of its divisors is an integer number (12269238334).

Almost surely, 2^139861834127 is an apocalyptic number.

139861834127 is a deficient number, since it is larger than the sum of its proper divisors (7369025881).

139861834127 is an equidigital number, since it uses as much as digits as its factorization.

139861834127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248810 (or 2248769 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The spelling of 139861834127 in words is "one hundred thirty-nine billion, eight hundred sixty-one million, eight hundred thirty-four thousand, one hundred twenty-seven".