130394921 has 2 divisors, whose sum is σ = 130394922. Its totient is φ = 130394920.

The previous prime is 130394867. The next prime is 130394941. The reversal of 130394921 is 129493031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85303696 + 45091225 = 9236^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 130394921 - 2⁶ = 130394857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130394941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65197460 + 65197461.

It is an arithmetic number, because the mean of its divisors is an integer number (65197461).

Almost surely, 2^130394921 is an apocalyptic number.

It is an amenable number.

130394921 is a deficient number, since it is larger than the sum of its proper divisors (1).

130394921 is an equidigital number, since it uses as much as digits as its factorization.

130394921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 130394921 is about 11419.0595497177. The cubic root of 130394921 is about 507.0921550392.

The spelling of 130394921 in words is "one hundred thirty million, three hundred ninety-four thousand, nine hundred twenty-one".