1143156 has 48 divisors (see below), whose sum is σ = 3153920. Its totient is φ = 315360.

The previous prime is 1143143. The next prime is 1143161. The reversal of 1143156 is 6513411.

1143156 = T₅₆₈ + T₅₆₉ + ... + T₅₇₄.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385 + ... + 2823.

2^1143156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576960).

1143156 is an abundant number, since it is smaller than the sum of its proper divisors (2010764).

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

1143156 is a wasteful number, since it uses less digits than its factorization.

1143156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 482 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 1143156 is about 1069.1847361424. The cubic root of 1143156 is about 104.5607043344.

Adding to 1143156 its reverse (6513411), we get a palindrome (7656567).

The spelling of 1143156 in words is "one million, one hundred forty-three thousand, one hundred fifty-six".