75423 has 8 divisors (see below), whose sum is σ = 103936. Its totient is φ = 48600.

The previous prime is 75407. The next prime is 75431. The reversal of 75423 is 32457.

Added to its reverse (32457) it gives a triangular number (107880 = T₄₆₄).

It is a happy number.

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

It is not a de Polignac number, because 75423 - 2⁴ = 75407 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 75423.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 75423.

It is not an unprimeable number, because it can be changed into a prime (75403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313 + ... + 498.

It is an arithmetic number, because the mean of its divisors is an integer number (12992).

2⁷⁵⁴²³ is an apocalyptic number.

75423 is a deficient number, since it is larger than the sum of its proper divisors (28513).

75423 is a wasteful number, since it uses less digits than its factorization.

75423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

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

The square root of 75423 is about 274.6324816914. The cubic root of 75423 is about 42.2507673495.

Adding to 75423 its reverse (32457), we get a triangular number (107880 = T₄₆₄).

It can be divided in two parts, 754 and 23, that added together give a palindrome (777).

The spelling of 75423 in words is "seventy-five thousand, four hundred twenty-three".