130440641 has 4 divisors (see below), whose sum is σ = 130503984. Its totient is φ = 130377300.

The previous prime is 130440619. The next prime is 130440649. The reversal of 130440641 is 146044031.

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 130440641 - 2¹⁴ = 130424257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130440649) 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, 28475 + ... + 32736.

It is an arithmetic number, because the mean of its divisors is an integer number (32625996).

Almost surely, 2^130440641 is an apocalyptic number.

It is an amenable number.

130440641 is a deficient number, since it is larger than the sum of its proper divisors (63343).

130440641 is an equidigital number, since it uses as much as digits as its factorization.

130440641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63342.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 130440641 is about 11421.0612904406. The cubic root of 130440641 is about 507.1514148734.

Adding to 130440641 its reverse (146044031), we get a palindrome (276484672).

The spelling of 130440641 in words is "one hundred thirty million, four hundred forty thousand, six hundred forty-one".