130073921 has 2 divisors, whose sum is σ = 130073922. Its totient is φ = 130073920.

The previous prime is 130073897. The next prime is 130073929. The reversal of 130073921 is 129370031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122434225 + 7639696 = 11065^2 + 2764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130073921 is a prime.

It is equal to p_7382132 and since 130073921 and 7382132 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (130073929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65036960 + 65036961.

It is an arithmetic number, because the mean of its divisors is an integer number (65036961).

Almost surely, 2^130073921 is an apocalyptic number.

It is an amenable number.

130073921 is a deficient number, since it is larger than the sum of its proper divisors (1).

130073921 is an equidigital number, since it uses as much as digits as its factorization.

130073921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 130073921 is about 11404.9954405953. The cubic root of 130073921 is about 506.6757013528.

The spelling of 130073921 in words is "one hundred thirty million, seventy-three thousand, nine hundred twenty-one".