1142100223 has 16 divisors (see below), whose sum is σ = 1289004192. Its totient is φ = 1002880000.

The previous prime is 1142100209. The next prime is 1142100227. The reversal of 1142100223 is 3220012411.

It is a cyclic number.

It is not a de Polignac number, because 1142100223 - 2²⁹ = 605229311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142100197 and 1142100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142100227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33015 + ... + 58087.

It is an arithmetic number, because the mean of its divisors is an integer number (80562762).

Almost surely, 2^1142100223 is an apocalyptic number.

1142100223 is a deficient number, since it is larger than the sum of its proper divisors (146903969).

1142100223 is a wasteful number, since it uses less digits than its factorization.

1142100223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25226.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1142100223 is about 33794.9733392409. The cubic root of 1142100223 is about 1045.2850494107.

Adding to 1142100223 its reverse (3220012411), we get a palindrome (4362112634).

The spelling of 1142100223 in words is "one billion, one hundred forty-two million, one hundred thousand, two hundred twenty-three".