513742 has 8 divisors (see below), whose sum is σ = 783432. Its totient is φ = 252600.

The previous prime is 513739. The next prime is 513749. The reversal of 513742 is 247315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984 + ... + 2227.

It is an arithmetic number, because the mean of its divisors is an integer number (97929).

2⁵¹³⁷⁴² is an apocalyptic number.

513742 is a deficient number, since it is larger than the sum of its proper divisors (269690).

513742 is a wasteful number, since it uses less digits than its factorization.

513742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274.

The product of its digits is 840, while the sum is 22.

The square root of 513742 is about 716.7579786790. The cubic root of 513742 is about 80.0906264635.

The spelling of 513742 in words is "five hundred thirteen thousand, seven hundred forty-two".