515320142 has 8 divisors (see below), whose sum is σ = 773165736. Its totient is φ = 257598232.

The previous prime is 515320123. The next prime is 515320151. The reversal of 515320142 is 241023515.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19688 + ... + 37659.

It is an arithmetic number, because the mean of its divisors is an integer number (96645717).

Almost surely, 2^515320142 is an apocalyptic number.

515320142 is a deficient number, since it is larger than the sum of its proper divisors (257845594).

515320142 is a wasteful number, since it uses less digits than its factorization.

515320142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61842.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 515320142 is about 22700.6639109961. The cubic root of 515320142 is about 801.7255161915.

Adding to 515320142 its reverse (241023515), we get a palindrome (756343657).

The spelling of 515320142 in words is "five hundred fifteen million, three hundred twenty thousand, one hundred forty-two".