1142635273 has 16 divisors (see below), whose sum is σ = 1264830336. Its totient is φ = 1025516160.

The previous prime is 1142635253. The next prime is 1142635289. The reversal of 1142635273 is 3725362411.

It is a cyclic number.

It is not a de Polignac number, because 1142635273 - 2²¹ = 1140538121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142635213) 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 15 ways as a sum of consecutive naturals, for example, 160140 + ... + 167122.

It is an arithmetic number, because the mean of its divisors is an integer number (79051896).

Almost surely, 2^1142635273 is an apocalyptic number.

1142635273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1142635273 is a deficient number, since it is larger than the sum of its proper divisors (122195063).

1142635273 is a wasteful number, since it uses less digits than its factorization.

1142635273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7344.

The product of its digits is 30240, while the sum is 34.

The square root of 1142635273 is about 33802.8885304200. Note that the first 3 decimals coincide. The cubic root of 1142635273 is about 1045.4482553011.

Adding to 1142635273 its reverse (3725362411), we get a palindrome (4867997684).

The spelling of 1142635273 in words is "one billion, one hundred forty-two million, six hundred thirty-five thousand, two hundred seventy-three".