40518422 has 16 divisors (see below), whose sum is σ = 70440192. Its totient is φ = 17120040.

The previous prime is 40518421. The next prime is 40518487. The reversal of 40518422 is 22481504.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40518391 and 40518400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40518421) 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 7 ways as a sum of consecutive naturals, for example, 19388 + ... + 21375.

It is an arithmetic number, because the mean of its divisors is an integer number (4402512).

Almost surely, 2^40518422 is an apocalyptic number.

40518422 is a deficient number, since it is larger than the sum of its proper divisors (29921770).

40518422 is a wasteful number, since it uses less digits than its factorization.

40518422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40843.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 40518422 is about 6365.4082351409. The cubic root of 40518422 is about 343.4663338258.

Adding to 40518422 its reverse (22481504), we get a palindrome (62999926).

The spelling of 40518422 in words is "forty million, five hundred eighteen thousand, four hundred twenty-two".