1102842 has 32 divisors (see below), whose sum is σ = 2640960. Its totient is φ = 339120.

The previous prime is 1102831. The next prime is 1102847. The reversal of 1102842 is 2482011.

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

It is not an unprimeable number, because it can be changed into a prime (1102847) 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, 84 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (82530).

2^1102842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1102842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320480).

1102842 is an abundant number, since it is smaller than the sum of its proper divisors (1538118).

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

1102842 is a wasteful number, since it uses less digits than its factorization.

1102842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1102842 is about 1050.1628445151. The cubic root of 1102842 is about 103.3168363073.

Adding to 1102842 its reverse (2482011), we get a palindrome (3584853).

The spelling of 1102842 in words is "one million, one hundred two thousand, eight hundred forty-two".