129790061 has 2 divisors, whose sum is σ = 129790062. Its totient is φ = 129790060.

The previous prime is 129790021. The next prime is 129790091. The reversal of 129790061 is 160097921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71740900 + 58049161 = 8470^2 + 7619^2 .

It is a cyclic number.

It is not a de Polignac number, because 129790061 - 2⁶ = 129789997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129790021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64895030 + 64895031.

It is an arithmetic number, because the mean of its divisors is an integer number (64895031).

Almost surely, 2^129790061 is an apocalyptic number.

It is an amenable number.

129790061 is a deficient number, since it is larger than the sum of its proper divisors (1).

129790061 is an equidigital number, since it uses as much as digits as its factorization.

129790061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 129790061 is about 11392.5440969083. The cubic root of 129790061 is about 506.3068605340.

The spelling of 129790061 in words is "one hundred twenty-nine million, seven hundred ninety thousand, sixty-one".