126775123 has 2 divisors, whose sum is σ = 126775124. Its totient is φ = 126775122.

The previous prime is 126775111. The next prime is 126775147. The reversal of 126775123 is 321577621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126775123 - 2¹⁷ = 126644051 is a prime.

It is not a weakly prime, because it can be changed into another prime (126775823) 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, 63387561 + 63387562.

It is an arithmetic number, because the mean of its divisors is an integer number (63387562).

Almost surely, 2^126775123 is an apocalyptic number.

126775123 is a deficient number, since it is larger than the sum of its proper divisors (1).

126775123 is an equidigital number, since it uses as much as digits as its factorization.

126775123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 34.

The square root of 126775123 is about 11259.4459455161. The cubic root of 126775123 is about 502.3557144551.

The spelling of 126775123 in words is "one hundred twenty-six million, seven hundred seventy-five thousand, one hundred twenty-three".