130323421 has 4 divisors (see below), whose sum is σ = 130521244. Its totient is φ = 130125600.

The previous prime is 130323409. The next prime is 130323491. The reversal of 130323421 is 124323031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124323031 = 7 ⋅17760433.

It can be written as a sum of positive squares in 2 ways, for example, as 122544900 + 7778521 = 11070^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 130323421 - 2⁹ = 130322909 is a prime.

It is a super-2 number, since 2×130323421² = 33968388122286482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130323491) 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, 97920 + ... + 99241.

It is an arithmetic number, because the mean of its divisors is an integer number (32630311).

Almost surely, 2^130323421 is an apocalyptic number.

It is an amenable number.

130323421 is a deficient number, since it is larger than the sum of its proper divisors (197823).

130323421 is an equidigital number, since it uses as much as digits as its factorization.

130323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197822.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 130323421 is about 11415.9283897544. The cubic root of 130323421 is about 506.9994527626. Note that the first 3 decimals are identical.

Adding to 130323421 its reverse (124323031), we get a palindrome (254646452).

The spelling of 130323421 in words is "one hundred thirty million, three hundred twenty-three thousand, four hundred twenty-one".