40242222 has 24 divisors (see below), whose sum is σ = 87702264. Its totient is φ = 13335504.

The previous prime is 40242221. The next prime is 40242233. The reversal of 40242222 is 22224204.

40242222 is a `hidden beast` number, since 402 + 42 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 40242195 and 40242204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40242221) 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, 3348 + ... + 9575.

It is an arithmetic number, because the mean of its divisors is an integer number (3654261).

Almost surely, 2^40242222 is an apocalyptic number.

40242222 is an abundant number, since it is smaller than the sum of its proper divisors (47460042).

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

40242222 is a wasteful number, since it uses less digits than its factorization.

40242222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13104 (or 13101 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 40242222 is about 6343.6757483339. The cubic root of 40242222 is about 342.6841235654.

Adding to 40242222 its reverse (22224204), we get a palindrome (62466426).

It can be divided in two parts, 402 and 42222, that added together give a palindrome (42624).

The spelling of 40242222 in words is "forty million, two hundred forty-two thousand, two hundred twenty-two".