1024243440 has 80 divisors (see below), whose sum is σ = 3463814016. Its totient is φ = 248300800.

The previous prime is 1024243403. The next prime is 1024243447. The reversal of 1024243440 is 443424201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1024243440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024243447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191346 + ... + 196625.

Almost surely, 2^1024243440 is an apocalyptic number.

1024243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1024243440 is an abundant number, since it is smaller than the sum of its proper divisors (2439570576).

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

1024243440 is a wasteful number, since it uses less digits than its factorization.

1024243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387998 (or 387992 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1024243440 is about 32003.8035239563. The cubic root of 1024243440 is about 1008.0167073320.

Adding to 1024243440 its reverse (443424201), we get a palindrome (1467667641).

The spelling of 1024243440 in words is "one billion, twenty-four million, two hundred forty-three thousand, four hundred forty".