126216239 has 2 divisors, whose sum is σ = 126216240. Its totient is φ = 126216238.

The previous prime is 126216193. The next prime is 126216241. The reversal of 126216239 is 932612621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126216239 is a prime.

Together with 126216241, 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 (126216269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63108119 + 63108120.

It is an arithmetic number, because the mean of its divisors is an integer number (63108120).

Almost surely, 2^126216239 is an apocalyptic number.

126216239 is a deficient number, since it is larger than the sum of its proper divisors (1).

126216239 is an equidigital number, since it uses as much as digits as its factorization.

126216239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 126216239 is about 11234.6000818899. The cubic root of 126216239 is about 501.6164207368.

The spelling of 126216239 in words is "one hundred twenty-six million, two hundred sixteen thousand, two hundred thirty-nine".