1142245243 has 8 divisors (see below), whose sum is σ = 1182157200. Its totient is φ = 1102368288.

The previous prime is 1142245229. The next prime is 1142245261. The reversal of 1142245243 is 3425422411.

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 1142245243 - 2²⁵ = 1108690811 is a prime.

It is a super-2 number, since 2×1142245243² = 2609448390312258098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142245213) 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, 69705 + ... + 84517.

It is an arithmetic number, because the mean of its divisors is an integer number (147769650).

Almost surely, 2^1142245243 is an apocalyptic number.

1142245243 is a deficient number, since it is larger than the sum of its proper divisors (39911957).

1142245243 is a wasteful number, since it uses less digits than its factorization.

1142245243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501.

The product of its digits is 7680, while the sum is 28.

The square root of 1142245243 is about 33797.1188564943. The cubic root of 1142245243 is about 1045.3292897845.

Adding to 1142245243 its reverse (3425422411), we get a palindrome (4567667654).

It can be divided in two parts, 11422 and 45243, that added together give a palindrome (56665).

The spelling of 1142245243 in words is "one billion, one hundred forty-two million, two hundred forty-five thousand, two hundred forty-three".