130669421 has 2 divisors, whose sum is σ = 130669422. Its totient is φ = 130669420.

The previous prime is 130669393. The next prime is 130669423. The reversal of 130669421 is 124966031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 41744521 = 9430^2 + 6461^2 .

It is a cyclic number.

It is not a de Polignac number, because 130669421 - 2¹⁰ = 130668397 is a prime.

Together with 130669423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130669423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65334710 + 65334711.

It is an arithmetic number, because the mean of its divisors is an integer number (65334711).

Almost surely, 2^130669421 is an apocalyptic number.

It is an amenable number.

130669421 is a deficient number, since it is larger than the sum of its proper divisors (1).

130669421 is an equidigital number, since it uses as much as digits as its factorization.

130669421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 130669421 is about 11431.0726093399. The cubic root of 130669421 is about 507.4477395287.

The spelling of 130669421 in words is "one hundred thirty million, six hundred sixty-nine thousand, four hundred twenty-one".