126730979 has 2 divisors, whose sum is σ = 126730980. Its totient is φ = 126730978.

The previous prime is 126730913. The next prime is 126730987. The reversal of 126730979 is 979037621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126730979 - 2¹² = 126726883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126730909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63365489 + 63365490.

It is an arithmetic number, because the mean of its divisors is an integer number (63365490).

Almost surely, 2^126730979 is an apocalyptic number.

126730979 is a deficient number, since it is larger than the sum of its proper divisors (1).

126730979 is an equidigital number, since it uses as much as digits as its factorization.

126730979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 126730979 is about 11257.4854652360. The cubic root of 126730979 is about 502.2973997412.

The spelling of 126730979 in words is "one hundred twenty-six million, seven hundred thirty thousand, nine hundred seventy-nine".