1143134520 has 64 divisors (see below), whose sum is σ = 3741171840. Its totient is φ = 277123200.

The previous prime is 1143134501. The next prime is 1143134543. The reversal of 1143134520 is 254313411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 431686 + ... + 434325.

It is an arithmetic number, because the mean of its divisors is an integer number (58455810).

Almost surely, 2^1143134520 is an apocalyptic number.

1143134520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143134520 is an abundant number, since it is smaller than the sum of its proper divisors (2598037320).

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

1143134520 is a wasteful number, since it uses less digits than its factorization.

1143134520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866036 (or 866032 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1143134520 is about 33810.2724035167. The cubic root of 1143134520 is about 1045.6004942876.

Adding to 1143134520 its reverse (254313411), we get a palindrome (1397447931).

The spelling of 1143134520 in words is "one billion, one hundred forty-three million, one hundred thirty-four thousand, five hundred twenty".