1313430642 has 24 divisors (see below), whose sum is σ = 3013165116. Its totient is φ = 412056576.

The previous prime is 1313430641. The next prime is 1313430647. The reversal of 1313430642 is 2460343131.

1313430642 is a `hidden beast` number, since 1 + 3 + 13 + 4 + 3 + 0 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1283717241 + 29713401 = 35829^2 + 5451^2 .

It is not an unprimeable number, because it can be changed into a prime (1313430641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2145823 + ... + 2146434.

Almost surely, 2^1313430642 is an apocalyptic number.

1313430642 is an abundant number, since it is smaller than the sum of its proper divisors (1699734474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313430642 is a wasteful number, since it uses less digits than its factorization.

1313430642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292282 (or 4292279 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1313430642 is about 36241.2836693183. The cubic root of 1313430642 is about 1095.1385025281.

Adding to 1313430642 its reverse (2460343131), we get a palindrome (3773773773).

The spelling of 1313430642 in words is "one billion, three hundred thirteen million, four hundred thirty thousand, six hundred forty-two".