507423 has 16 divisors (see below), whose sum is σ = 786176. Its totient is φ = 285120.

The previous prime is 507421. The next prime is 507431. The reversal of 507423 is 324705.

It is a happy number.

It is not a de Polignac number, because 507423 - 2¹ = 507421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

507423 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 507423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1368 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (49136).

2⁵⁰⁷⁴²³ is an apocalyptic number.

507423 is a deficient number, since it is larger than the sum of its proper divisors (278753).

507423 is a wasteful number, since it uses less digits than its factorization.

507423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 507423 is about 712.3362969834. The cubic root of 507423 is about 79.7609006893.

The spelling of 507423 in words is "five hundred seven thousand, four hundred twenty-three".