1005430423 has 4 divisors (see below), whose sum is σ = 1005724720. Its totient is φ = 1005136128.

The previous prime is 1005430417. The next prime is 1005430427. The reversal of 1005430423 is 3240345001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1005430423 - 2⁹ = 1005429911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005430394 and 1005430403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005430427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141963 + ... + 148876.

It is an arithmetic number, because the mean of its divisors is an integer number (251431180).

Almost surely, 2^1005430423 is an apocalyptic number.

1005430423 is a deficient number, since it is larger than the sum of its proper divisors (294297).

1005430423 is an equidigital number, since it uses as much as digits as its factorization.

1005430423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294296.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1005430423 is about 31708.5228763498. The cubic root of 1005430423 is about 1001.8068742391.

Adding to 1005430423 its reverse (3240345001), we get a palindrome (4245775424).

The spelling of 1005430423 in words is "one billion, five million, four hundred thirty thousand, four hundred twenty-three".