130120657 has 4 divisors (see below), whose sum is σ = 130994100. Its totient is φ = 129247216.

The previous prime is 130120631. The next prime is 130120691. The reversal of 130120657 is 756021031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 756021031 = 433 ⋅1746007.

It can be written as a sum of positive squares in 2 ways, for example, as 21939856 + 108180801 = 4684^2 + 10401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130120657 is a prime.

It is a super-2 number, since 2×130120657² = 33862770756223298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130120457) 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, 436498 + ... + 436795.

It is an arithmetic number, because the mean of its divisors is an integer number (32748525).

Almost surely, 2^130120657 is an apocalyptic number.

It is an amenable number.

130120657 is a deficient number, since it is larger than the sum of its proper divisors (873443).

130120657 is an equidigital number, since it uses as much as digits as its factorization.

130120657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873442.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 130120657 is about 11407.0441833106. The cubic root of 130120657 is about 506.7363775177.

Adding to 130120657 its reverse (756021031), we get a palindrome (886141688).

The spelling of 130120657 in words is "one hundred thirty million, one hundred twenty thousand, six hundred fifty-seven".