13421402 has 12 divisors (see below), whose sum is σ = 20527710. Its totient is φ = 6581328.

The previous prime is 13421399. The next prime is 13421407. The reversal of 13421402 is 20412431.

It can be written as a sum of positive squares in 3 ways, for example, as 12187081 + 1234321 = 3491^2 + 1111^2 .

It is not an unprimeable number, because it can be changed into a prime (13421407) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 4424 + ... + 6812.

Almost surely, 2^13421402 is an apocalyptic number.

13421402 is a deficient number, since it is larger than the sum of its proper divisors (7106308).

13421402 is an equidigital number, since it uses as much as digits as its factorization.

13421402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13421402 is about 3663.5231676625. The cubic root of 13421402 is about 237.6471597676.

Adding to 13421402 its reverse (20412431), we get a palindrome (33833833).

It can be divided in two parts, 1342 and 1402, that added together give a cube (2744 = 14³).

The spelling of 13421402 in words is "thirteen million, four hundred twenty-one thousand, four hundred two".