130249621 has 4 divisors (see below), whose sum is σ = 135912672. Its totient is φ = 124586572.

The previous prime is 130249619. The next prime is 130249633. The reversal of 130249621 is 126942031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130249621 - 2¹ = 130249619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130249621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130249601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831491 + ... + 2831536.

It is an arithmetic number, because the mean of its divisors is an integer number (33978168).

Almost surely, 2^130249621 is an apocalyptic number.

It is an amenable number.

130249621 is a deficient number, since it is larger than the sum of its proper divisors (5663051).

130249621 is an equidigital number, since it uses as much as digits as its factorization.

130249621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663050.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 130249621 is about 11412.6956062098. The cubic root of 130249621 is about 506.9037328878.

The spelling of 130249621 in words is "one hundred thirty million, two hundred forty-nine thousand, six hundred twenty-one".