12509430 has 32 divisors (see below), whose sum is σ = 30993408. Its totient is φ = 3228000.

The previous prime is 12509423. The next prime is 12509437. The reversal of 12509430 is 3490521.

It is an interprime number because it is at equal distance from previous prime (12509423) and next prime (12509437).

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

It is a self number, because there is not a number n which added to its sum of digits gives 12509430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12509437) 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, 5796 + ... + 7655.

It is an arithmetic number, because the mean of its divisors is an integer number (968544).

Almost surely, 2^12509430 is an apocalyptic number.

12509430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12509430 is an abundant number, since it is smaller than the sum of its proper divisors (18483978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12509430 is a wasteful number, since it uses less digits than its factorization.

12509430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13492.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 12509430 is about 3536.8672578993. The cubic root of 12509430 is about 232.1377872547.

Adding to 12509430 its reverse (3490521), we get a palindrome (15999951).

The spelling of 12509430 in words is "twelve million, five hundred nine thousand, four hundred thirty".