75430 has 16 divisors (see below), whose sum is σ = 143280. Its totient is φ = 28512.

The previous prime is 75407. The next prime is 75431. The reversal of 75430 is 3457.

75430 is nontrivially palindromic in base 9.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an Ulam number.

It is a plaindrome in base 12.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 75398 and 75407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75431) by changing a digit.

75430 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, 9 + ... + 388.

It is an arithmetic number, because the mean of its divisors is an integer number (8955).

2⁷⁵⁴³⁰ is an apocalyptic number.

75430 is a deficient number, since it is larger than the sum of its proper divisors (67850).

75430 is a wasteful number, since it uses less digits than its factorization.

75430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 75430 is about 274.6452257004. The cubic root of 75430 is about 42.2520744053.

Adding to 75430 its reverse (3457), we get a palindrome (78887).

It can be divided in two parts, 754 and 30, that added together give a square (784 = 28²).

The spelling of 75430 in words is "seventy-five thousand, four hundred thirty".