127715212139 has 2 divisors, whose sum is σ = 127715212140. Its totient is φ = 127715212138.

The previous prime is 127715212123. The next prime is 127715212147. The reversal of 127715212139 is 931212517721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127715212139 - 2⁴ = 127715212123 is a prime.

It is a super-2 number, since 2×127715212139² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127715212096 and 127715212105.

It is not a weakly prime, because it can be changed into another prime (127715212109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63857606069 + 63857606070.

It is an arithmetic number, because the mean of its divisors is an integer number (63857606070).

Almost surely, 2^127715212139 is an apocalyptic number.

127715212139 is a deficient number, since it is larger than the sum of its proper divisors (1).

127715212139 is an equidigital number, since it uses as much as digits as its factorization.

127715212139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 41.

The spelling of 127715212139 in words is "one hundred twenty-seven billion, seven hundred fifteen million, two hundred twelve thousand, one hundred thirty-nine".