1143142 has 32 divisors (see below), whose sum is σ = 2306304. Its totient is φ = 410400.

The previous prime is 1143113. The next prime is 1143143. The reversal of 1143142 is 2413411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143143) 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, 1717 + ... + 2287.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2^1143142 is an apocalyptic number.

1143142 is an abundant number, since it is smaller than the sum of its proper divisors (1163162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143142 is a wasteful number, since it uses less digits than its factorization.

1143142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604.

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

The square root of 1143142 is about 1069.1781890779. The cubic root of 1143142 is about 104.5602774881.

Adding to 1143142 its reverse (2413411), we get a palindrome (3556553).

The spelling of 1143142 in words is "one million, one hundred forty-three thousand, one hundred forty-two".