126908123 has 2 divisors, whose sum is σ = 126908124. Its totient is φ = 126908122.

The previous prime is 126908083. The next prime is 126908149. The reversal of 126908123 is 321809621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126908123 - 2¹² = 126904027 is a prime.

It is a super-2 number, since 2×126908123² = 32211343366766258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126908123.

It is not a weakly prime, because it can be changed into another prime (126908183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63454061 + 63454062.

It is an arithmetic number, because the mean of its divisors is an integer number (63454062).

Almost surely, 2^126908123 is an apocalyptic number.

126908123 is a deficient number, since it is larger than the sum of its proper divisors (1).

126908123 is an equidigital number, since it uses as much as digits as its factorization.

126908123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 126908123 is about 11265.3505493615. The cubic root of 126908123 is about 502.5313271395.

The spelling of 126908123 in words is "one hundred twenty-six million, nine hundred eight thousand, one hundred twenty-three".