1163142 has 36 divisors (see below), whose sum is σ = 2674620. Its totient is φ = 365256.

The previous prime is 1163137. The next prime is 1163143. The reversal of 1163142 is 2413611.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6409 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (74295).

2^1163142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1337310).

1163142 is an abundant number, since it is smaller than the sum of its proper divisors (1511478).

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

1163142 is a wasteful number, since it uses less digits than its factorization.

1163142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 203 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1163142 is about 1078.4906119202. The cubic root of 1163142 is about 105.1665384381.

Adding to 1163142 its reverse (2413611), we get a palindrome (3576753).

The spelling of 1163142 in words is "one million, one hundred sixty-three thousand, one hundred forty-two".