130023442 has 4 divisors (see below), whose sum is σ = 195035166. Its totient is φ = 65011720.

The previous prime is 130023437. The next prime is 130023449. The reversal of 130023442 is 244320031.

130023442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244320031 = 19 ⋅12858949.

It can be written as a sum of positive squares in only one way, i.e., 96255721 + 33767721 = 9811^2 + 5811^2 .

It is not an unprimeable number, because it can be changed into a prime (130023449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32505859 + ... + 32505862.

Almost surely, 2^130023442 is an apocalyptic number.

130023442 is a deficient number, since it is larger than the sum of its proper divisors (65011724).

130023442 is an equidigital number, since it uses as much as digits as its factorization.

130023442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65011723.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 130023442 is about 11402.7822043570. The cubic root of 130023442 is about 506.6101494169.

Adding to 130023442 its reverse (244320031), we get a palindrome (374343473).

It can be divided in two parts, 1300 and 23442, that added together give a palindrome (24742).

The spelling of 130023442 in words is "one hundred thirty million, twenty-three thousand, four hundred forty-two".