1122138 has 24 divisors (see below), whose sum is σ = 2510976. Its totient is φ = 361800.

The previous prime is 1122137. The next prime is 1122139. The reversal of 1122138 is 8312211.

It is an interprime number because it is at equal distance from previous prime (1122137) and next prime (1122139).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1122138.

It is not an unprimeable number, because it can be changed into a prime (1122131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (104624).

2^1122138 is an apocalyptic number.

1122138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1122138 is an abundant number, since it is smaller than the sum of its proper divisors (1388838).

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

1122138 is a wasteful number, since it uses less digits than its factorization.

1122138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050 (or 2047 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1122138 is about 1059.3101528825. The cubic root of 1122138 is about 103.9159207028.

Adding to 1122138 its reverse (8312211), we get a palindrome (9434349).

The spelling of 1122138 in words is "one million, one hundred twenty-two thousand, one hundred thirty-eight".