40222242 has 24 divisors (see below), whose sum is σ = 87335820. Its totient is φ = 13378560.

The previous prime is 40222223. The next prime is 40222249. The reversal of 40222242 is 24222204.

40222242 is a `hidden beast` number, since 402 + 22 + 242 = 666.

40222242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39200121 + 1022121 = 6261^2 + 1011^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40222249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7234 + ... + 11522.

Almost surely, 2^40222242 is an apocalyptic number.

40222242 is an abundant number, since it is smaller than the sum of its proper divisors (47113578).

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

40222242 is a wasteful number, since it uses less digits than its factorization.

40222242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818 (or 4815 counting only the distinct ones).

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

The square root of 40222242 is about 6342.1007560587. The cubic root of 40222242 is about 342.6274007016.

Adding to 40222242 its reverse (24222204), we get a palindrome (64444446).

The spelling of 40222242 in words is "forty million, two hundred twenty-two thousand, two hundred forty-two".