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40422 = 236737

40422 has 8 divisors (see below), whose sum is σ = 80856. Its totient is φ = 13472.

The previous prime is 40387. The next prime is 40423. The reversal of 40422 is 22404.

Adding to 40422 its reverse (22404), we get a palindrome (62826).

It can be divided in two parts, 404 and 22, that multiplied together give a palindrome (8888).

It is a sphenic number, since it is the product of 3 distinct primes.

40422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 40398 and 40407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423) by changing a digit.

40422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3363 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (10107).

240422 is an apocalyptic number.

40422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (40428).

40422 is a wasteful number, since it uses less digits than its factorization.

40422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6742.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 40422 is about 201.0522320194. The cubic root of 40422 is about 34.3193667599.

The spelling of 40422 in words is "forty thousand, four hundred twenty-two", and thus it is an iban number.

Divisors: 1 2 3 6 6737 13474 20211 40422