1142204143 has 8 divisors (see below), whose sum is σ = 1209857040. Its totient is φ = 1074602880.

The previous prime is 1142204137. The next prime is 1142204149. The reversal of 1142204143 is 3414022411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1142204137) and next prime (1142204149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142204143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142204149) 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, 38533 + ... + 61393.

It is an arithmetic number, because the mean of its divisors is an integer number (151232130).

Almost surely, 2^1142204143 is an apocalyptic number.

1142204143 is a deficient number, since it is larger than the sum of its proper divisors (67652897).

1142204143 is a wasteful number, since it uses less digits than its factorization.

1142204143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25817.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1142204143 is about 33796.5108110290. The cubic root of 1142204143 is about 1045.3167520365.

Adding to 1142204143 its reverse (3414022411), we get a palindrome (4556226554).

The spelling of 1142204143 in words is "one billion, one hundred forty-two million, two hundred four thousand, one hundred forty-three".