130215442 has 12 divisors (see below), whose sum is σ = 227212830. Its totient is φ = 55806576.

The previous prime is 130215439. The next prime is 130215457. The reversal of 130215442 is 244512031.

It can be written as a sum of positive squares in only one way, i.e., 93721761 + 36493681 = 9681^2 + 6041^2 .

It is a super-2 number, since 2×130215442² = 33912122670510728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664267 + ... + 664462.

Almost surely, 2^130215442 is an apocalyptic number.

130215442 is a deficient number, since it is larger than the sum of its proper divisors (96997388).

130215442 is a wasteful number, since it uses less digits than its factorization.

130215442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328745 (or 1328738 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 130215442 is about 11411.1980966067. The cubic root of 130215442 is about 506.8593898839.

Adding to 130215442 its reverse (244512031), we get a palindrome (374727473).

The spelling of 130215442 in words is "one hundred thirty million, two hundred fifteen thousand, four hundred forty-two".