126243959 has 2 divisors, whose sum is σ = 126243960. Its totient is φ = 126243958.

The previous prime is 126243947. The next prime is 126243967. The reversal of 126243959 is 959342621.

It is a strong prime.

It is an emirp because it is prime and its reverse (959342621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126243959 - 2²⁴ = 109466743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126243979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63121979 + 63121980.

It is an arithmetic number, because the mean of its divisors is an integer number (63121980).

Almost surely, 2^126243959 is an apocalyptic number.

126243959 is a deficient number, since it is larger than the sum of its proper divisors (1).

126243959 is an equidigital number, since it uses as much as digits as its factorization.

126243959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 126243959 is about 11235.8337029346. The cubic root of 126243959 is about 501.6531402310.

The spelling of 126243959 in words is "one hundred twenty-six million, two hundred forty-three thousand, nine hundred fifty-nine".