1413243421 has 4 divisors (see below), whose sum is σ = 1413324000. Its totient is φ = 1413162844.

The previous prime is 1413243413. The next prime is 1413243437. The reversal of 1413243421 is 1243423141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1243423141 = 173 ⋅7187417.

It is a cyclic number.

It is not a de Polignac number, because 1413243421 - 2³ = 1413243413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1413243451) 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, 1591 + ... + 53188.

It is an arithmetic number, because the mean of its divisors is an integer number (353331000).

Almost surely, 2^1413243421 is an apocalyptic number.

It is an amenable number.

1413243421 is a deficient number, since it is larger than the sum of its proper divisors (80579).

1413243421 is an equidigital number, since it uses as much as digits as its factorization.

1413243421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80578.

The product of its digits is 2304, while the sum is 25.

The square root of 1413243421 is about 37593.1299707806. The cubic root of 1413243421 is about 1122.2053223569.

Adding to 1413243421 its reverse (1243423141), we get a palindrome (2656666562).

The spelling of 1413243421 in words is "one billion, four hundred thirteen million, two hundred forty-three thousand, four hundred twenty-one".