130445421 has 4 divisors (see below), whose sum is σ = 173927232. Its totient is φ = 86963612.

The previous prime is 130445417. The next prime is 130445429. The reversal of 130445421 is 124544031.

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 130445421 - 2² = 130445417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130445391 and 130445400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130445429) 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, 21740901 + ... + 21740906.

It is an arithmetic number, because the mean of its divisors is an integer number (43481808).

Almost surely, 2^130445421 is an apocalyptic number.

It is an amenable number.

130445421 is a deficient number, since it is larger than the sum of its proper divisors (43481811).

130445421 is an equidigital number, since it uses as much as digits as its factorization.

130445421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43481810.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 130445421 is about 11421.2705510377. The cubic root of 130445421 is about 507.1576096558.

Adding to 130445421 its reverse (124544031), we get a palindrome (254989452).

The spelling of 130445421 in words is "one hundred thirty million, four hundred forty-five thousand, four hundred twenty-one".