1321421124 has 24 divisors (see below), whose sum is σ = 3085740448. Its totient is φ = 440127360.

The previous prime is 1321421119. The next prime is 1321421131. The reversal of 1321421124 is 4211241231.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1321421124.

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, 27157 + ... + 58140.

Almost surely, 2^1321421124 is an apocalyptic number.

It is an amenable number.

1321421124 is an abundant number, since it is smaller than the sum of its proper divisors (1764319324).

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

1321421124 is a wasteful number, since it uses less digits than its factorization.

1321421124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86595 (or 86593 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1321421124 is about 36351.3565634076. The cubic root of 1321421124 is about 1097.3548354692.

Adding to 1321421124 its reverse (4211241231), we get a palindrome (5532662355).

The spelling of 1321421124 in words is "one billion, three hundred twenty-one million, four hundred twenty-one thousand, one hundred twenty-four".