12430813421 has 6 divisors (see below), whose sum is σ = 13460585130. Its totient is φ = 11474596848.

The previous prime is 12430813399. The next prime is 12430813433. The reversal of 12430813421 is 12431803421.

It can be written as a sum of positive squares in 3 ways, for example, as 665072521 + 11765740900 = 25789^2 + 108470^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12430813421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12430813481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36777386 + ... + 36777723.

It is an arithmetic number, because the mean of its divisors is an integer number (2243430855).

Almost surely, 2^12430813421 is an apocalyptic number.

It is an amenable number.

12430813421 is a deficient number, since it is larger than the sum of its proper divisors (1029771709).

12430813421 is an equidigital number, since it uses as much as digits as its factorization.

12430813421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73555135 (or 73555122 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 12430813421 in words is "twelve billion, four hundred thirty million, eight hundred thirteen thousand, four hundred twenty-one".