12523430 has 8 divisors (see below), whose sum is σ = 22542192. Its totient is φ = 5009368.

The previous prime is 12523429. The next prime is 12523463. The reversal of 12523430 is 3432521.

It is a happy number.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626162 + ... + 626181.

It is an arithmetic number, because the mean of its divisors is an integer number (2817774).

Almost surely, 2^12523430 is an apocalyptic number.

12523430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12523430 is a deficient number, since it is larger than the sum of its proper divisors (10018762).

12523430 is a wasteful number, since it uses less digits than its factorization.

12523430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252350.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 12523430 is about 3538.8458570557. The cubic root of 12523430 is about 232.2243544120.

Adding to 12523430 its reverse (3432521), we get a palindrome (15955951).

Subtracting from 12523430 its reverse (3432521), we obtain a palindrome (9090909).

The spelling of 12523430 in words is "twelve million, five hundred twenty-three thousand, four hundred thirty".