517142 has 16 divisors (see below), whose sum is σ = 844800. Its totient is φ = 236520.

The previous prime is 517129. The next prime is 517151. The reversal of 517142 is 241715.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 517142.

It is an unprimeable number.

517142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959 + ... + 1397.

It is an arithmetic number, because the mean of its divisors is an integer number (52800).

2⁵¹⁷¹⁴² is an apocalyptic number.

517142 is a deficient number, since it is larger than the sum of its proper divisors (327658).

517142 is a wasteful number, since it uses less digits than its factorization.

517142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491.

The product of its digits is 280, while the sum is 20.

The square root of 517142 is about 719.1258582474. The cubic root of 517142 is about 80.2669209248.

Adding to 517142 its reverse (241715), we get a palindrome (758857).

The spelling of 517142 in words is "five hundred seventeen thousand, one hundred forty-two".