126625871 has 2 divisors, whose sum is σ = 126625872. Its totient is φ = 126625870.

The previous prime is 126625819. The next prime is 126625883. The reversal of 126625871 is 178526621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126625871 is a prime.

It is a super-2 number, since 2×126625871² = 32068222413017282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126625801) 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, 63312935 + 63312936.

It is an arithmetic number, because the mean of its divisors is an integer number (63312936).

Almost surely, 2^126625871 is an apocalyptic number.

126625871 is a deficient number, since it is larger than the sum of its proper divisors (1).

126625871 is an equidigital number, since it uses as much as digits as its factorization.

126625871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 126625871 is about 11252.8161364167. The cubic root of 126625871 is about 502.1584963779.

The spelling of 126625871 in words is "one hundred twenty-six million, six hundred twenty-five thousand, eight hundred seventy-one".