130154021 has 2 divisors, whose sum is σ = 130154022. Its totient is φ = 130154020.

The previous prime is 130153979. The next prime is 130154029. The reversal of 130154021 is 120451031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123321025 + 6832996 = 11105^2 + 2614^2 .

It is an emirp because it is prime and its reverse (120451031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130154021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130154029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65077010 + 65077011.

It is an arithmetic number, because the mean of its divisors is an integer number (65077011).

Almost surely, 2^130154021 is an apocalyptic number.

It is an amenable number.

130154021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130154021 is an equidigital number, since it uses as much as digits as its factorization.

130154021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 130154021 is about 11408.5065192601. The cubic root of 130154021 is about 506.7796842662.

The spelling of 130154021 in words is "one hundred thirty million, one hundred fifty-four thousand, twenty-one".