1142532113 has 4 divisors (see below), whose sum is σ = 1145246388. Its totient is φ = 1139817840.

The previous prime is 1142532047. The next prime is 1142532143. The reversal of 1142532113 is 3112352411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 518381824 + 624150289 = 22768^2 + 24983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142532113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1142532143) 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, 1356506 + ... + 1357347.

It is an arithmetic number, because the mean of its divisors is an integer number (286311597).

Almost surely, 2^1142532113 is an apocalyptic number.

It is an amenable number.

1142532113 is a deficient number, since it is larger than the sum of its proper divisors (2714275).

1142532113 is an equidigital number, since it uses as much as digits as its factorization.

1142532113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714274.

The product of its digits is 720, while the sum is 23.

The square root of 1142532113 is about 33801.3625908779. The cubic root of 1142532113 is about 1045.4167924508.

Adding to 1142532113 its reverse (3112352411), we get a palindrome (4254884524).

The spelling of 1142532113 in words is "one billion, one hundred forty-two million, five hundred thirty-two thousand, one hundred thirteen".