1321024144 has 40 divisors (see below), whose sum is σ = 2812596768. Its totient is φ = 596071680.

The previous prime is 1321024097. The next prime is 1321024181. The reversal of 1321024144 is 4414201231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3282 + ... + 51505.

Almost surely, 2^1321024144 is an apocalyptic number.

It is an amenable number.

1321024144 is an abundant number, since it is smaller than the sum of its proper divisors (1491572624).

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

1321024144 is a wasteful number, since it uses less digits than its factorization.

1321024144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54943 (or 54937 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1321024144 is about 36345.8958343305. The cubic root of 1321024144 is about 1097.2449357192.

Adding to 1321024144 its reverse (4414201231), we get a palindrome (5735225375).

The spelling of 1321024144 in words is "one billion, three hundred twenty-one million, twenty-four thousand, one hundred forty-four".