126644239 has 2 divisors, whose sum is σ = 126644240. Its totient is φ = 126644238.

The previous prime is 126644213. The next prime is 126644251. The reversal of 126644239 is 932446621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126644239 - 2¹³ = 126636047 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 126644198 and 126644207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126644209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63322119 + 63322120.

It is an arithmetic number, because the mean of its divisors is an integer number (63322120).

Almost surely, 2^126644239 is an apocalyptic number.

126644239 is a deficient number, since it is larger than the sum of its proper divisors (1).

126644239 is an equidigital number, since it uses as much as digits as its factorization.

126644239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 126644239 is about 11253.6322580756. The cubic root of 126644239 is about 502.1827757800.

The spelling of 126644239 in words is "one hundred twenty-six million, six hundred forty-four thousand, two hundred thirty-nine".