1143135 has 48 divisors (see below), whose sum is σ = 2396160. Its totient is φ = 492480.

The previous prime is 1143113. The next prime is 1143143. The reversal of 1143135 is 5313411.

1143135 = T₁ + T₂ + ... + T₁₈₉.

1143135 is a nontrivial binomial coefficient, being equal to C(191, 3).

It is not a de Polignac number, because 1143135 - 2⁶ = 1143071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is the 189-th tetrahedral number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5890 + ... + 6080.

It is an arithmetic number, because the mean of its divisors is an integer number (49920).

2^1143135 is an apocalyptic number.

1143135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1143135 is an abundant number, since it is smaller than the sum of its proper divisors (1253025).

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

1143135 is a wasteful number, since it uses less digits than its factorization.

1143135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 225 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 1143135 is about 1069.1749155307. The cubic root of 1143135 is about 104.5600640636.

Adding to 1143135 its reverse (5313411), we get a palindrome (6456546).

It can be divided in two parts, 114 and 3135, that added together give a square (3249 = 57²).

The spelling of 1143135 in words is "one million, one hundred forty-three thousand, one hundred thirty-five".