13421242 has 4 divisors (see below), whose sum is σ = 20131866. Its totient is φ = 6710620.

The previous prime is 13421207. The next prime is 13421251. The reversal of 13421242 is 24212431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12257001 + 1164241 = 3501^2 + 1079^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3355309 + ... + 3355312.

Almost surely, 2^13421242 is an apocalyptic number.

13421242 is a deficient number, since it is larger than the sum of its proper divisors (6710624).

13421242 is an equidigital number, since it uses as much as digits as its factorization.

13421242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710623.

The product of its digits is 384, while the sum is 19.

The square root of 13421242 is about 3663.5013306944. The cubic root of 13421242 is about 237.6462154127.

Adding to 13421242 its reverse (24212431), we get a palindrome (37633673).

It can be divided in two parts, 1 and 3421242, that added together give a palindrome (3421243).

The spelling of 13421242 in words is "thirteen million, four hundred twenty-one thousand, two hundred forty-two".