130042981 has 2 divisors, whose sum is σ = 130042982. Its totient is φ = 130042980.

The previous prime is 130042967. The next prime is 130042993. The reversal of 130042981 is 189240031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82901025 + 47141956 = 9105^2 + 6866^2 .

It is a cyclic number.

It is not a de Polignac number, because 130042981 - 2¹³ = 130034789 is a prime.

It is a super-2 number, since 2×130042981² = 33822353814732722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130042921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65021490 + 65021491.

It is an arithmetic number, because the mean of its divisors is an integer number (65021491).

Almost surely, 2^130042981 is an apocalyptic number.

It is an amenable number.

130042981 is a deficient number, since it is larger than the sum of its proper divisors (1).

130042981 is an equidigital number, since it uses as much as digits as its factorization.

130042981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 130042981 is about 11403.6389367605. The cubic root of 130042981 is about 506.6355247384.

The spelling of 130042981 in words is "one hundred thirty million, forty-two thousand, nine hundred eighty-one".