513857242 has 8 divisors (see below), whose sum is σ = 811353600. Its totient is φ = 243406044.

The previous prime is 513857231. The next prime is 513857243. The reversal of 513857242 is 242758315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (513857243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6761242 + ... + 6761317.

It is an arithmetic number, because the mean of its divisors is an integer number (101419200).

Almost surely, 2^513857242 is an apocalyptic number.

513857242 is a deficient number, since it is larger than the sum of its proper divisors (297496358).

513857242 is a wasteful number, since it uses less digits than its factorization.

513857242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13522580.

The product of its digits is 67200, while the sum is 37.

The square root of 513857242 is about 22668.4194861486. The cubic root of 513857242 is about 800.9661462737.

The spelling of 513857242 in words is "five hundred thirteen million, eight hundred fifty-seven thousand, two hundred forty-two".