130431442 has 4 divisors (see below), whose sum is σ = 195647166. Its totient is φ = 65215720.

The previous prime is 130431437. The next prime is 130431443. The reversal of 130431442 is 244134031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244134031 = 89 ⋅2743079.

It can be written as a sum of positive squares in only one way, i.e., 123676641 + 6754801 = 11121^2 + 2599^2 .

It is a super-2 number, since 2×130431442² = 34024722124398728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130431443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32607859 + ... + 32607862.

Almost surely, 2^130431442 is an apocalyptic number.

130431442 is a deficient number, since it is larger than the sum of its proper divisors (65215724).

130431442 is an equidigital number, since it uses as much as digits as its factorization.

130431442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65215723.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 130431442 is about 11420.6585624473. The cubic root of 130431442 is about 507.1394927314.

Adding to 130431442 its reverse (244134031), we get a palindrome (374565473).

The spelling of 130431442 in words is "one hundred thirty million, four hundred thirty-one thousand, four hundred forty-two".