513422242 has 4 divisors (see below), whose sum is σ = 770133366. Its totient is φ = 256711120.

The previous prime is 513422233. The next prime is 513422243. The reversal of 513422242 is 242224315.

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

It can be written as a sum of positive squares in only one way, i.e., 505305441 + 8116801 = 22479^2 + 2849^2 .

It is not an unprimeable number, because it can be changed into a prime (513422243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128355559 + ... + 128355562.

Almost surely, 2^513422242 is an apocalyptic number.

513422242 is a deficient number, since it is larger than the sum of its proper divisors (256711124).

513422242 is a wasteful number, since it uses less digits than its factorization.

513422242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256711123.

The product of its digits is 3840, while the sum is 25.

The square root of 513422242 is about 22658.8226084234. The cubic root of 513422242 is about 800.7400662081.

Adding to 513422242 its reverse (242224315), we get a palindrome (755646557).

The spelling of 513422242 in words is "five hundred thirteen million, four hundred twenty-two thousand, two hundred forty-two".