13421243 has 8 divisors (see below), whose sum is σ = 14918256. Its totient is φ = 11970400.

The previous prime is 13421207. The next prime is 13421251. The reversal of 13421243 is 34212431.

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

It is a cyclic number.

It is not a de Polignac number, because 13421243 - 2⁸ = 13420987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10928 + ... + 12093.

It is an arithmetic number, because the mean of its divisors is an integer number (1864782).

Almost surely, 2^13421243 is an apocalyptic number.

13421243 is a deficient number, since it is larger than the sum of its proper divisors (1497013).

13421243 is a wasteful number, since it uses less digits than its factorization.

13421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23085.

The product of its digits is 576, while the sum is 20.

The square root of 13421243 is about 3663.5014671759. The cubic root of 13421243 is about 237.6462213150.

Adding to 13421243 its reverse (34212431), we get a palindrome (47633674).

The spelling of 13421243 in words is "thirteen million, four hundred twenty-one thousand, two hundred forty-three".