40122222 has 32 divisors (see below), whose sum is σ = 92005632. Its totient is φ = 11426304.

The previous prime is 40122197. The next prime is 40122223. The reversal of 40122222 is 22222104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40122223) 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, 13198 + ... + 15950.

It is an arithmetic number, because the mean of its divisors is an integer number (2875176).

Almost surely, 2^40122222 is an apocalyptic number.

40122222 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40122222 is an abundant number, since it is smaller than the sum of its proper divisors (51883410).

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

40122222 is a wasteful number, since it uses less digits than its factorization.

40122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40122222 is about 6334.2104480353. The cubic root of 40122222 is about 342.3431629589.

Adding to 40122222 its reverse (22222104), we get a palindrome (62344326).

The spelling of 40122222 in words is "forty million, one hundred twenty-two thousand, two hundred twenty-two".