139105342122347 has 4 divisors (see below), whose sum is σ = 146426675918280. Its totient is φ = 131784008326416.

The previous prime is 139105342122301. The next prime is 139105342122401. The reversal of 139105342122347 is 743221243501931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139105342122347 - 2²² = 139105337928043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139105342122947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3660666897938 + ... + 3660666897975.

It is an arithmetic number, because the mean of its divisors is an integer number (36606668979570).

Almost surely, 2^{139105342122347} is an apocalyptic number.

139105342122347 is a deficient number, since it is larger than the sum of its proper divisors (7321333795933).

139105342122347 is an equidigital number, since it uses as much as digits as its factorization.

139105342122347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321333795932.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 139105342122347 in words is "one hundred thirty-nine trillion, one hundred five billion, three hundred forty-two million, one hundred twenty-two thousand, three hundred forty-seven".