126157439 has 2 divisors, whose sum is σ = 126157440. Its totient is φ = 126157438.

The previous prime is 126157433. The next prime is 126157477. The reversal of 126157439 is 934751621.

It is an a-pointer prime, because the next prime (126157477) can be obtained adding 126157439 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126157439 - 2⁸ = 126157183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126157433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63078719 + 63078720.

It is an arithmetic number, because the mean of its divisors is an integer number (63078720).

Almost surely, 2^126157439 is an apocalyptic number.

126157439 is a deficient number, since it is larger than the sum of its proper divisors (1).

126157439 is an equidigital number, since it uses as much as digits as its factorization.

126157439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 126157439 is about 11231.9828614542. The cubic root of 126157439 is about 501.5385130993.

The spelling of 126157439 in words is "one hundred twenty-six million, one hundred fifty-seven thousand, four hundred thirty-nine".