1142142245 has 4 divisors (see below), whose sum is σ = 1370570700. Its totient is φ = 913713792.

The previous prime is 1142142241. The next prime is 1142142247. The reversal of 1142142245 is 5422412411.

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 781370209 + 360772036 = 27953^2 + 18994^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142142245 - 2² = 1142142241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142142241) 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 3 ways as a sum of consecutive naturals, for example, 114214220 + ... + 114214229.

It is an arithmetic number, because the mean of its divisors is an integer number (342642675).

Almost surely, 2^1142142245 is an apocalyptic number.

It is an amenable number.

1142142245 is a deficient number, since it is larger than the sum of its proper divisors (228428455).

1142142245 is an equidigital number, since it uses as much as digits as its factorization.

1142142245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228428454.

The product of its digits is 2560, while the sum is 26.

The square root of 1142142245 is about 33795.5950532018. The cubic root of 1142142245 is about 1045.2978691933.

Adding to 1142142245 its reverse (5422412411), we get a palindrome (6564554656).

The spelling of 1142142245 in words is "one billion, one hundred forty-two million, one hundred forty-two thousand, two hundred forty-five".