1840122 has 12 divisors (see below), whose sum is σ = 3986970. Its totient is φ = 613368.

The previous prime is 1840117. The next prime is 1840123. The reversal of 1840122 is 2210481.

It can be written as a sum of positive squares in only one way, i.e., 1490841 + 349281 = 1221^2 + 591^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 102229 = 1840122 / (1 + 8 + 4 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1840095 and 1840104.

It is not an unprimeable number, because it can be changed into a prime (1840123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51097 + ... + 51132.

2^1840122 is an apocalyptic number.

1840122 is an abundant number, since it is smaller than the sum of its proper divisors (2146848).

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

1840122 is a wasteful number, since it uses less digits than its factorization.

1840122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102237 (or 102234 counting only the distinct ones).

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

The square root of 1840122 is about 1356.5109656763. The cubic root of 1840122 is about 122.5412217235.

The spelling of 1840122 in words is "one million, eight hundred forty thousand, one hundred twenty-two".