519942 has 16 divisors (see below), whose sum is σ = 1047600. Its totient is φ = 172032.

The previous prime is 519931. The next prime is 519943. The reversal of 519942 is 249915.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (519943) by changing a digit.

519942 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, 934 + ... + 1382.

It is an arithmetic number, because the mean of its divisors is an integer number (65475).

2⁵¹⁹⁹⁴² is an apocalyptic number.

519942 is an abundant number, since it is smaller than the sum of its proper divisors (527658).

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

519942 is a wasteful number, since it uses less digits than its factorization.

519942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647.

The product of its digits is 3240, while the sum is 30.

The square root of 519942 is about 721.0700382071. The cubic root of 519942 is about 80.4115252902.

The spelling of 519942 in words is "five hundred nineteen thousand, nine hundred forty-two".