13302421 has 4 divisors (see below), whose sum is σ = 14511744. Its totient is φ = 12093100.

The previous prime is 13302391. The next prime is 13302461. The reversal of 13302421 is 12420331.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 13302421 - 2⁵ = 13302389 is a prime.

It is a super-2 number, since 2×13302421² = 353908808922482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13302395 and 13302404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13302461) 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, 604645 + ... + 604666.

It is an arithmetic number, because the mean of its divisors is an integer number (3627936).

Almost surely, 2^13302421 is an apocalyptic number.

13302421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13302421 is a deficient number, since it is larger than the sum of its proper divisors (1209323).

13302421 is a wasteful number, since it uses less digits than its factorization.

13302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209322.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13302421 is about 3647.2484149013. The cubic root of 13302421 is about 236.9428253780.

Adding to 13302421 its reverse (12420331), we get a palindrome (25722752).

The spelling of 13302421 in words is "thirteen million, three hundred two thousand, four hundred twenty-one".