126966239 has 2 divisors, whose sum is σ = 126966240. Its totient is φ = 126966238.

The previous prime is 126966221. The next prime is 126966241. The reversal of 126966239 is 932669621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126966239 is a prime.

It is a super-2 number, since 2×126966239² = 32240851691610242, which contains 22 as substring.

Together with 126966241, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126966239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126966209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63483119 + 63483120.

It is an arithmetic number, because the mean of its divisors is an integer number (63483120).

Almost surely, 2^126966239 is an apocalyptic number.

126966239 is a deficient number, since it is larger than the sum of its proper divisors (1).

126966239 is an equidigital number, since it uses as much as digits as its factorization.

126966239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 126966239 is about 11267.9296678671. The cubic root of 126966239 is about 502.6080247614.

The spelling of 126966239 in words is "one hundred twenty-six million, nine hundred sixty-six thousand, two hundred thirty-nine".