1140299980 has 96 divisors (see below), whose sum is σ = 2554675200. Its totient is φ = 426666240.

The previous prime is 1140299977. The next prime is 1140300011. The reversal of 1140299980 is 899920411.

It is a happy number.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7652946 + ... + 7653094.

It is an arithmetic number, because the mean of its divisors is an integer number (26611200).

Almost surely, 2^1140299980 is an apocalyptic number.

1140299980 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 1140299980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277337600).

1140299980 is an abundant number, since it is smaller than the sum of its proper divisors (1414375220).

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

1140299980 is a wasteful number, since it uses less digits than its factorization.

1140299980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1140299980 is about 33768.3280604770. The cubic root of 1140299980 is about 1044.7355481095.

The spelling of 1140299980 in words is "one billion, one hundred forty million, two hundred ninety-nine thousand, nine hundred eighty".