126038639 has 2 divisors, whose sum is σ = 126038640. Its totient is φ = 126038638.

The previous prime is 126038603. The next prime is 126038641. The reversal of 126038639 is 936830621.

It is a strong prime.

It is an emirp because it is prime and its reverse (936830621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126038639 - 2²⁴ = 109261423 is a prime.

It is a super-3 number, since 3×126038639³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 126038641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126038699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63019319 + 63019320.

It is an arithmetic number, because the mean of its divisors is an integer number (63019320).

Almost surely, 2^126038639 is an apocalyptic number.

126038639 is a deficient number, since it is larger than the sum of its proper divisors (1).

126038639 is an equidigital number, since it uses as much as digits as its factorization.

126038639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 126038639 is about 11226.6931462475. The cubic root of 126038639 is about 501.3810339783.

The spelling of 126038639 in words is "one hundred twenty-six million, thirty-eight thousand, six hundred thirty-nine".