130442789 has 4 divisors (see below), whose sum is σ = 130471020. Its totient is φ = 130414560.

The previous prime is 130442759. The next prime is 130442791. The reversal of 130442789 is 987244031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 95218564 + 35224225 = 9758^2 + 5935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130442789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130442759) 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, 5384 + ... + 17025.

It is an arithmetic number, because the mean of its divisors is an integer number (32617755).

Almost surely, 2^130442789 is an apocalyptic number.

It is an amenable number.

130442789 is a deficient number, since it is larger than the sum of its proper divisors (28231).

130442789 is an equidigital number, since it uses as much as digits as its factorization.

130442789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28230.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 130442789 is about 11421.1553268485. The cubic root of 130442789 is about 507.1541986563.

The spelling of 130442789 in words is "one hundred thirty million, four hundred forty-two thousand, seven hundred eighty-nine".