1142545331 has 4 divisors (see below), whose sum is σ = 1179401664. Its totient is φ = 1105689000.

The previous prime is 1142545307. The next prime is 1142545357. The reversal of 1142545331 is 1335452411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142545331 - 2⁶ = 1142545267 is a prime.

It is a super-2 number, since 2×1142545331² = 2610819666779799122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142545294 and 1142545303.

It is not an unprimeable number, because it can be changed into a prime (1142545931) 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, 18428120 + ... + 18428181.

It is an arithmetic number, because the mean of its divisors is an integer number (294850416).

Almost surely, 2^1142545331 is an apocalyptic number.

1142545331 is a deficient number, since it is larger than the sum of its proper divisors (36856333).

1142545331 is an equidigital number, since it uses as much as digits as its factorization.

1142545331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36856332.

The product of its digits is 7200, while the sum is 29.

The square root of 1142545331 is about 33801.5581149745. The cubic root of 1142545331 is about 1045.4208239249.

Adding to 1142545331 its reverse (1335452411), we get a palindrome (2477997742).

The spelling of 1142545331 in words is "one billion, one hundred forty-two million, five hundred forty-five thousand, three hundred thirty-one".