13421124 has 18 divisors (see below), whose sum is σ = 33925710. Its totient is φ = 4473696.

The previous prime is 13421071. The next prime is 13421129. The reversal of 13421124 is 42112431.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 3873024 = 3090^2 + 1968^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13421097 and 13421106.

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 5 ways as a sum of consecutive naturals, for example, 186369 + ... + 186440.

Almost surely, 2^13421124 is an apocalyptic number.

It is an amenable number.

13421124 is an abundant number, since it is smaller than the sum of its proper divisors (20504586).

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

13421124 is a wasteful number, since it uses less digits than its factorization.

13421124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372819 (or 372814 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 13421124 is about 3663.4852258471. The cubic root of 13421124 is about 237.6455189463.

Adding to 13421124 its reverse (42112431), we get a palindrome (55533555).

The spelling of 13421124 in words is "thirteen million, four hundred twenty-one thousand, one hundred twenty-four".