40122 has 16 divisors (see below), whose sum is σ = 89280.
Its totient is φ = 13356.
The previous prime is 40111. The next prime is 40123. The reversal of 40122 is 22104.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is not an unprimeable number, because it can be changed into a prime (40123) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318 + ... + 425.
It is an arithmetic number, because the mean of its divisors is an integer number (5580).
240122 is an apocalyptic number.
40122 is an abundant number, since it is smaller than the sum of its proper divisors (49158).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44640).
40122 is a wasteful number, since it uses less digits than its factorization.
40122 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 754 (or 748 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
The square root of 40122 is about 200.3047677915.
The cubic root of 40122 is about 34.2342531552.
Adding to 40122 its reverse (22104), we get a palindrome (62226).
The spelling of 40122 in words is "forty thousand, one hundred twenty-two", and thus it is an iban number.