1143052540 has 48 divisors (see below), whose sum is σ = 2887718400. Its totient is φ = 371276352.

The previous prime is 1143052453. The next prime is 1143052541. The reversal of 1143052540 is 452503411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143052541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 212200 + ... + 217519.

It is an arithmetic number, because the mean of its divisors is an integer number (60160800).

Almost surely, 2^1143052540 is an apocalyptic number.

1143052540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143052540 is an abundant number, since it is smaller than the sum of its proper divisors (1744665860).

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

1143052540 is a wasteful number, since it uses less digits than its factorization.

1143052540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429754 (or 429752 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1143052540 is about 33809.0600283415. The cubic root of 1143052540 is about 1045.5754985773.

Adding to 1143052540 its reverse (452503411), we get a palindrome (1595555951).

The spelling of 1143052540 in words is "one billion, one hundred forty-three million, fifty-two thousand, five hundred forty".