13421120 has 28 divisors (see below), whose sum is σ = 31959804. Its totient is φ = 5368320.

The previous prime is 13421071. The next prime is 13421129. The reversal of 13421120 is 2112431.

It can be written as a sum of positive squares in 2 ways, for example, as 1915456 + 11505664 = 1384^2 + 3392^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13421095 and 13421104.

It is not an unprimeable number, because it can be changed into a prime (13421129) 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, 20651 + ... + 21290.

Almost surely, 2^13421120 is an apocalyptic number.

13421120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13421120 is an abundant number, since it is smaller than the sum of its proper divisors (18538684).

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

13421120 is an equidigital number, since it uses as much as digits as its factorization.

13421120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41958 (or 41948 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 13421120 is about 3663.4846799188. The cubic root of 13421120 is about 237.6454953372.

Adding to 13421120 its reverse (2112431), we get a palindrome (15533551).

The spelling of 13421120 in words is "thirteen million, four hundred twenty-one thousand, one hundred twenty".