126117811 has 2 divisors, whose sum is σ = 126117812. Its totient is φ = 126117810.

The previous prime is 126117787. The next prime is 126117821. The reversal of 126117811 is 118711621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126117811 is a prime.

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 126117811.

It is not a weakly prime, because it can be changed into another prime (126117821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63058905 + 63058906.

It is an arithmetic number, because the mean of its divisors is an integer number (63058906).

Almost surely, 2^126117811 is an apocalyptic number.

126117811 is a deficient number, since it is larger than the sum of its proper divisors (1).

126117811 is an equidigital number, since it uses as much as digits as its factorization.

126117811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 28.

The square root of 126117811 is about 11230.2186532587. The cubic root of 126117811 is about 501.4859939356.

The spelling of 126117811 in words is "one hundred twenty-six million, one hundred seventeen thousand, eight hundred eleven".