510642 has 24 divisors (see below), whose sum is σ = 1207440. Its totient is φ = 154680.

The previous prime is 510619. The next prime is 510677. The reversal of 510642 is 246015.

It is a happy number.

It is a super-4 number, since 4×510642⁴ (a number of 24 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

510642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1092 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (50310).

2⁵¹⁰⁶⁴² is an apocalyptic number.

510642 is an abundant number, since it is smaller than the sum of its proper divisors (696798).

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

510642 is a wasteful number, since it uses less digits than its factorization.

510642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598 (or 2595 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 510642 is about 714.5921913931. The cubic root of 510642 is about 79.9292082083.

Adding to 510642 its reverse (246015), we get a palindrome (756657).

The spelling of 510642 in words is "five hundred ten thousand, six hundred forty-two".