130424321 has 4 divisors (see below), whose sum is σ = 133605444. Its totient is φ = 127243200.

The previous prime is 130424317. The next prime is 130424351. The reversal of 130424321 is 123424031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5856400 + 124567921 = 2420^2 + 11161^2 .

It is a cyclic number.

It is not a de Polignac number, because 130424321 - 2² = 130424317 is a prime.

It is a super-2 number, since 2×130424321² = 34021007016622082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130424293 and 130424302.

It is not an unprimeable number, because it can be changed into a prime (130424311) 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, 1590500 + ... + 1590581.

It is an arithmetic number, because the mean of its divisors is an integer number (33401361).

Almost surely, 2^130424321 is an apocalyptic number.

It is an amenable number.

130424321 is a deficient number, since it is larger than the sum of its proper divisors (3181123).

130424321 is an equidigital number, since it uses as much as digits as its factorization.

130424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181122.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 130424321 is about 11420.3467985872. The cubic root of 130424321 is about 507.1302633462.

Adding to 130424321 its reverse (123424031), we get a palindrome (253848352).

The spelling of 130424321 in words is "one hundred thirty million, four hundred twenty-four thousand, three hundred twenty-one".