130720451 has 4 divisors (see below), whose sum is σ = 130767672. Its totient is φ = 130673232.

The previous prime is 130720439. The next prime is 130720483. The reversal of 130720451 is 154027031.

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

It is a cyclic number.

It is not a de Polignac number, because 130720451 - 2¹⁰ = 130719427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130720351) 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, 19181 + ... + 25086.

It is an arithmetic number, because the mean of its divisors is an integer number (32691918).

Almost surely, 2^130720451 is an apocalyptic number.

130720451 is a deficient number, since it is larger than the sum of its proper divisors (47221).

130720451 is an equidigital number, since it uses as much as digits as its factorization.

130720451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47220.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 130720451 is about 11433.3044654640. The cubic root of 130720451 is about 507.5137883608.

Adding to 130720451 its reverse (154027031), we get a palindrome (284747482).

The spelling of 130720451 in words is "one hundred thirty million, seven hundred twenty thousand, four hundred fifty-one".