1143542523 has 4 divisors (see below), whose sum is σ = 1524723368. Its totient is φ = 762361680.

The previous prime is 1143542483. The next prime is 1143542549. The reversal of 1143542523 is 3252453411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1143542523 - 2¹³ = 1143534331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143542573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190590418 + ... + 190590423.

It is an arithmetic number, because the mean of its divisors is an integer number (381180842).

Almost surely, 2^1143542523 is an apocalyptic number.

1143542523 is a deficient number, since it is larger than the sum of its proper divisors (381180845).

1143542523 is an equidigital number, since it uses as much as digits as its factorization.

1143542523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381180844.

The product of its digits is 14400, while the sum is 30.

The square root of 1143542523 is about 33816.3055788180. The cubic root of 1143542523 is about 1045.7248766726.

Adding to 1143542523 its reverse (3252453411), we get a palindrome (4395995934).

The spelling of 1143542523 in words is "one billion, one hundred forty-three million, five hundred forty-two thousand, five hundred twenty-three".