1142255142 has 32 divisors (see below), whose sum is σ = 2900966400. Its totient is φ = 326358504.

The previous prime is 1142255137. The next prime is 1142255159. The reversal of 1142255142 is 2415522411.

It is a happy number.

1142255142 is a `hidden beast` number, since 1 + 142 + 2 + 5 + 514 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1510542 + ... + 1511297.

It is an arithmetic number, because the mean of its divisors is an integer number (90655200).

Almost surely, 2^1142255142 is an apocalyptic number.

1142255142 is an abundant number, since it is smaller than the sum of its proper divisors (1758711258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142255142 is a wasteful number, since it uses less digits than its factorization.

1142255142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021857 (or 3021851 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1142255142 is about 33797.2653035715. The cubic root of 1142255142 is about 1045.3323094760.

Adding to 1142255142 its reverse (2415522411), we get a palindrome (3557777553).

It can be divided in two parts, 11422 and 55142, that added together give a square (66564 = 258²).

The spelling of 1142255142 in words is "one billion, one hundred forty-two million, two hundred fifty-five thousand, one hundred forty-two".