1002402544 has 120 divisors (see below), whose sum is σ = 2333100672. Its totient is φ = 413487360.

The previous prime is 1002402529. The next prime is 1002402593. The reversal of 1002402544 is 4452042001.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1992597 + ... + 1993099.

Almost surely, 2^1002402544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002402544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166550336).

1002402544 is an abundant number, since it is smaller than the sum of its proper divisors (1330698128).

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

1002402544 is a wasteful number, since it uses less digits than its factorization.

1002402544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1002402544 is about 31660.7413684519. The cubic root of 1002402544 is about 1000.8002074972.

Adding to 1002402544 its reverse (4452042001), we get a palindrome (5454444545).

The spelling of 1002402544 in words is "one billion, two million, four hundred two thousand, five hundred forty-four".