1142140223 has 32 divisors (see below), whose sum is σ = 1448275968. Its totient is φ = 878169600.

The previous prime is 1142140213. The next prime is 1142140229. The reversal of 1142140223 is 3220412411.

It is a de Polignac number, because none of the positive numbers 2^k-1142140223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142140195 and 1142140204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142140229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244853 + ... + 249473.

It is an arithmetic number, because the mean of its divisors is an integer number (45258624).

Almost surely, 2^1142140223 is an apocalyptic number.

1142140223 is a deficient number, since it is larger than the sum of its proper divisors (306135745).

1142140223 is a wasteful number, since it uses less digits than its factorization.

1142140223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1142140223 is about 33795.5651380473. The cubic root of 1142140223 is about 1045.2972523426.

Adding to 1142140223 its reverse (3220412411), we get a palindrome (4362552634).

The spelling of 1142140223 in words is "one billion, one hundred forty-two million, one hundred forty thousand, two hundred twenty-three".