126879539 has 2 divisors, whose sum is σ = 126879540. Its totient is φ = 126879538.

The previous prime is 126879491. The next prime is 126879547. The reversal of 126879539 is 935978621.

It is a strong prime.

It is an emirp because it is prime and its reverse (935978621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126879539 - 2¹⁶ = 126814003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126879139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63439769 + 63439770.

It is an arithmetic number, because the mean of its divisors is an integer number (63439770).

Almost surely, 2^126879539 is an apocalyptic number.

126879539 is a deficient number, since it is larger than the sum of its proper divisors (1).

126879539 is an equidigital number, since it uses as much as digits as its factorization.

126879539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 126879539 is about 11264.0818090069. The cubic root of 126879539 is about 502.4935952914.

The spelling of 126879539 in words is "one hundred twenty-six million, eight hundred seventy-nine thousand, five hundred thirty-nine".