1142240273 has 8 divisors (see below), whose sum is σ = 1166241888. Its totient is φ = 1118482624.

The previous prime is 1142240263. The next prime is 1142240317. The reversal of 1142240273 is 3720422411.

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 1142240273 - 2⁴ = 1142240257 is a prime.

It is a super-2 number, since 2×1142240273² = 2609425682526229058, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1142240243) 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, 51515 + ... + 70272.

It is an arithmetic number, because the mean of its divisors is an integer number (145780236).

Almost surely, 2^1142240273 is an apocalyptic number.

It is an amenable number.

1142240273 is a deficient number, since it is larger than the sum of its proper divisors (24001615).

1142240273 is a wasteful number, since it uses less digits than its factorization.

1142240273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121983.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1142240273 is about 33797.0453294367. The cubic root of 1142240273 is about 1045.3277736786.

Adding to 1142240273 its reverse (3720422411), we get a palindrome (4862662684).

The spelling of 1142240273 in words is "one billion, one hundred forty-two million, two hundred forty thousand, two hundred seventy-three".