139862420671 has 2 divisors, whose sum is σ = 139862420672. Its totient is φ = 139862420670.

The previous prime is 139862420647. The next prime is 139862420713. The reversal of 139862420671 is 176024268931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139862420671 - 2³⁵ = 105502682303 is a prime.

It is a super-2 number, since 2×139862420671² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139862420611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69931210335 + 69931210336.

It is an arithmetic number, because the mean of its divisors is an integer number (69931210336).

Almost surely, 2^139862420671 is an apocalyptic number.

139862420671 is a deficient number, since it is larger than the sum of its proper divisors (1).

139862420671 is an equidigital number, since it uses as much as digits as its factorization.

139862420671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 139862420671 in words is "one hundred thirty-nine billion, eight hundred sixty-two million, four hundred twenty thousand, six hundred seventy-one".