515216142 has 24 divisors (see below), whose sum is σ = 1275773616. Its totient is φ = 147204576.

The previous prime is 515216111. The next prime is 515216159. The reversal of 515216142 is 241612515.

515216142 is a `hidden beast` number, since 515 + 2 + 1 + 6 + 142 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2044383 + ... + 2044634.

It is an arithmetic number, because the mean of its divisors is an integer number (53157234).

Almost surely, 2^515216142 is an apocalyptic number.

515216142 is an abundant number, since it is smaller than the sum of its proper divisors (760557474).

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

515216142 is a wasteful number, since it uses less digits than its factorization.

515216142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089032 (or 4089029 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 515216142 is about 22698.3731135075. The cubic root of 515216142 is about 801.6715788061.

Adding to 515216142 its reverse (241612515), we get a palindrome (756828657).

The spelling of 515216142 in words is "five hundred fifteen million, two hundred sixteen thousand, one hundred forty-two".