515942 has 16 divisors (see below), whose sum is σ = 894240. Its totient is φ = 218688.

The previous prime is 515941. The next prime is 515951. The reversal of 515942 is 249515.

It is a super-2 number, since 2×515942² = 532392294728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515941) 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, 1784 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (55890).

2⁵¹⁵⁹⁴² is an apocalyptic number.

515942 is a deficient number, since it is larger than the sum of its proper divisors (378298).

515942 is a wasteful number, since it uses less digits than its factorization.

515942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415.

The product of its digits is 1800, while the sum is 26.

The square root of 515942 is about 718.2910273698. The cubic root of 515942 is about 80.2047878270.

The spelling of 515942 in words is "five hundred fifteen thousand, nine hundred forty-two".