1145512140 has 48 divisors (see below), whose sum is σ = 3261807360. Its totient is φ = 300291520.

The previous prime is 1145512129. The next prime is 1145512141. The reversal of 1145512140 is 412155411.

It is a super-3 number, since 3×1145512140³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145512140.

It is not an unprimeable number, because it can be changed into a prime (1145512141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158256 + ... + 165335.

It is an arithmetic number, because the mean of its divisors is an integer number (67954320).

Almost surely, 2^1145512140 is an apocalyptic number.

1145512140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145512140 is an abundant number, since it is smaller than the sum of its proper divisors (2116295220).

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

1145512140 is a wasteful number, since it uses less digits than its factorization.

1145512140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323662 (or 323660 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1145512140 is about 33845.4153468383. The cubic root of 1145512140 is about 1046.3249115252.

Adding to 1145512140 its reverse (412155411), we get a palindrome (1557667551).

The spelling of 1145512140 in words is "one billion, one hundred forty-five million, five hundred twelve thousand, one hundred forty".