517512142 has 16 divisors (see below), whose sum is σ = 889643520. Its totient is φ = 221170968.

The previous prime is 517512137. The next prime is 517512143. The reversal of 517512142 is 241215715.

It is a self number, because there is not a number n which added to its sum of digits gives 517512142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517512143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46458 + ... + 56509.

It is an arithmetic number, because the mean of its divisors is an integer number (55602720).

Almost surely, 2^517512142 is an apocalyptic number.

517512142 is a deficient number, since it is larger than the sum of its proper divisors (372131378).

517512142 is a wasteful number, since it uses less digits than its factorization.

517512142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103335.

The product of its digits is 2800, while the sum is 28.

The square root of 517512142 is about 22748.8932038462. The cubic root of 517512142 is about 802.8606658377.

Adding to 517512142 its reverse (241215715), we get a palindrome (758727857).

The spelling of 517512142 in words is "five hundred seventeen million, five hundred twelve thousand, one hundred forty-two".