1118442 has 24 divisors (see below), whose sum is σ = 2424384. Its totient is φ = 343824.

The previous prime is 1118441. The next prime is 1118479. The reversal of 1118442 is 2448111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1118441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 463 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (101016).

2^1118442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212192).

1118442 is an abundant number, since it is smaller than the sum of its proper divisors (1305942).

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

1118442 is a wasteful number, since it uses less digits than its factorization.

1118442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1121 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

The square root of 1118442 is about 1057.5641824495. The cubic root of 1118442 is about 103.8017054899.

The spelling of 1118442 in words is "one million, one hundred eighteen thousand, four hundred forty-two".