1142144243 has 8 divisors (see below), whose sum is σ = 1178842560. Its totient is φ = 1106024040.

The previous prime is 1142144239. The next prime is 1142144273. The reversal of 1142144243 is 3424412411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142144243 - 2² = 1142144239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142144233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140513 + ... + 148418.

It is an arithmetic number, because the mean of its divisors is an integer number (147355320).

Almost surely, 2^1142144243 is an apocalyptic number.

1142144243 is a deficient number, since it is larger than the sum of its proper divisors (36698317).

1142144243 is an equidigital number, since it uses as much as digits as its factorization.

1142144243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289057.

The product of its digits is 3072, while the sum is 26.

The square root of 1142144243 is about 33795.6246132543. The cubic root of 1142144243 is about 1045.2984787215.

Adding to 1142144243 its reverse (3424412411), we get a palindrome (4566556654).

The spelling of 1142144243 in words is "one billion, one hundred forty-two million, one hundred forty-four thousand, two hundred forty-three".