139842673457 has 12 divisors (see below), whose sum is σ = 143369668596. Its totient is φ = 136399542240.

The previous prime is 139842673393. The next prime is 139842673483. The reversal of 139842673457 is 754376248931.

It can be written as a sum of positive squares in 2 ways, for example, as 94251456016 + 45591217441 = 307004^2 + 213521^2 .

It is not a de Polignac number, because 139842673457 - 2⁶ = 139842673393 is a prime.

It is a super-2 number, since 2×139842673457² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139842673396 and 139842673405.

It is not an unprimeable number, because it can be changed into a prime (139842273457) 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, 539207 + ... + 755267.

It is an arithmetic number, because the mean of its divisors is an integer number (11947472383).

Almost surely, 2^139842673457 is an apocalyptic number.

It is an amenable number.

139842673457 is a deficient number, since it is larger than the sum of its proper divisors (3526995139).

139842673457 is an equidigital number, since it uses as much as digits as its factorization.

139842673457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216448 (or 216401 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 59.

The spelling of 139842673457 in words is "one hundred thirty-nine billion, eight hundred forty-two million, six hundred seventy-three thousand, four hundred fifty-seven".