1321424244 has 72 divisors (see below), whose sum is σ = 3983441280. Its totient is φ = 361132992.

The previous prime is 1321424243. The next prime is 1321424281. The reversal of 1321424244 is 4424241231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321424243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108199 + ... + 119790.

Almost surely, 2^1321424244 is an apocalyptic number.

1321424244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1321424244 is an abundant number, since it is smaller than the sum of its proper divisors (2662017036).

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

1321424244 is a wasteful number, since it uses less digits than its factorization.

1321424244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228029 (or 228024 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 1321424244 is about 36351.3994778743. The cubic root of 1321424244 is about 1097.3556991213.

Adding to 1321424244 its reverse (4424241231), we get a palindrome (5745665475).

The spelling of 1321424244 in words is "one billion, three hundred twenty-one million, four hundred twenty-four thousand, two hundred forty-four".