13421044 has 24 divisors (see below), whose sum is σ = 28907648. Its totient is φ = 5309280.

The previous prime is 13421039. The next prime is 13421071. The reversal of 13421044 is 44012431.

13421044 = T₁₆₇ + T₁₆₈ + ... + T₄₃₉.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 18072 + ... + 18799.

Almost surely, 2^13421044 is an apocalyptic number.

13421044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13421044 is an abundant number, since it is smaller than the sum of its proper divisors (15486604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13421044 is a wasteful number, since it uses less digits than its factorization.

13421044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36895 (or 36893 counting only the distinct ones).

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

The square root of 13421044 is about 3663.4743072663. The cubic root of 13421044 is about 237.6450467633.

Adding to 13421044 its reverse (44012431), we get a palindrome (57433475).

The spelling of 13421044 in words is "thirteen million, four hundred twenty-one thousand, forty-four".