511742 has 16 divisors (see below), whose sum is σ = 957312. Its totient is φ = 199320.

The previous prime is 511723. The next prime is 511757. The reversal of 511742 is 247115.

It is a congruent number.

It is an unprimeable number.

511742 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, 1508 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (59832).

2⁵¹¹⁷⁴² is an apocalyptic number.

511742 is a deficient number, since it is larger than the sum of its proper divisors (445570).

511742 is a wasteful number, since it uses less digits than its factorization.

511742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343.

The product of its digits is 280, while the sum is 20.

The square root of 511742 is about 715.3614471021. The cubic root of 511742 is about 79.9865602423.

Adding to 511742 its reverse (247115), we get a palindrome (758857).

The spelling of 511742 in words is "five hundred eleven thousand, seven hundred forty-two".