1142784272 has 30 divisors (see below), whose sum is σ = 2575639278. Its totient is φ = 489764352.

The previous prime is 1142784271. The next prime is 1142784277. The reversal of 1142784272 is 2724872411.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1142169616 + 614656 = 33796^2 + 784^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1142784271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 728033 + ... + 729600.

Almost surely, 2^1142784272 is an apocalyptic number.

It is an amenable number.

1142784272 is an abundant number, since it is smaller than the sum of its proper divisors (1432855006).

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

1142784272 is a wasteful number, since it uses less digits than its factorization.

1142784272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457655 (or 1457642 counting only the distinct ones).

The product of its digits is 50176, while the sum is 38.

The square root of 1142784272 is about 33805.0923974481. The cubic root of 1142784272 is about 1045.4936952818.

The spelling of 1142784272 in words is "one billion, one hundred forty-two million, seven hundred eighty-four thousand, two hundred seventy-two".