1024121440 has 24 divisors (see below), whose sum is σ = 2419487280. Its totient is φ = 409648512.

The previous prime is 1024121407. The next prime is 1024121459. The reversal of 1024121440 is 441214201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3200220 + ... + 3200539.

It is an arithmetic number, because the mean of its divisors is an integer number (100811970).

Almost surely, 2^1024121440 is an apocalyptic number.

1024121440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1024121440 is an abundant number, since it is smaller than the sum of its proper divisors (1395365840).

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

1024121440 is an equidigital number, since it uses as much as digits as its factorization.

1024121440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400774 (or 6400766 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1024121440 is about 32001.8974437454. The cubic root of 1024121440 is about 1007.9766833441.

Adding to 1024121440 its reverse (441214201), we get a palindrome (1465335641).

The spelling of 1024121440 in words is "one billion, twenty-four million, one hundred twenty-one thousand, four hundred forty".