1140323120 has 80 divisors (see below), whose sum is σ = 2691390240. Its totient is φ = 449280000.

The previous prime is 1140323101. The next prime is 1140323131. The reversal of 1140323120 is 213230411.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2188460 + ... + 2188980.

It is an arithmetic number, because the mean of its divisors is an integer number (33642378).

Almost surely, 2^1140323120 is an apocalyptic number.

1140323120 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 1140323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345695120).

1140323120 is an abundant number, since it is smaller than the sum of its proper divisors (1551067120).

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

1140323120 is a wasteful number, since it uses less digits than its factorization.

1140323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1140323120 is about 33768.6706874878. The cubic root of 1140323120 is about 1044.7426149684.

Adding to 1140323120 its reverse (213230411), we get a palindrome (1353553531).

The spelling of 1140323120 in words is "one billion, one hundred forty million, three hundred twenty-three thousand, one hundred twenty".