1024021140 has 96 divisors (see below), whose sum is σ = 2967896064. Its totient is φ = 263537280.

The previous prime is 1024021133. The next prime is 1024021181. The reversal of 1024021140 is 411204201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1128567 + ... + 1129473.

It is an arithmetic number, because the mean of its divisors is an integer number (30915584).

Almost surely, 2^1024021140 is an apocalyptic number.

1024021140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1024021140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483948032).

1024021140 is an abundant number, since it is smaller than the sum of its proper divisors (1943874924).

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

1024021140 is a wasteful number, since it uses less digits than its factorization.

1024021140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1024021140 is about 32000.3303107952. The cubic root of 1024021140 is about 1007.9437759960.

Adding to 1024021140 its reverse (411204201), we get a palindrome (1435225341).

The spelling of 1024021140 in words is "one billion, twenty-four million, twenty-one thousand, one hundred forty".