40218422 has 4 divisors (see below), whose sum is σ = 60327636. Its totient is φ = 20109210.

The previous prime is 40218419. The next prime is 40218433. The reversal of 40218422 is 22481204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10054604 + ... + 10054607.

It is an arithmetic number, because the mean of its divisors is an integer number (15081909).

Almost surely, 2^40218422 is an apocalyptic number.

40218422 is a deficient number, since it is larger than the sum of its proper divisors (20109214).

40218422 is a wasteful number, since it uses less digits than its factorization.

40218422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20109213.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 40218422 is about 6341.7995868681. The cubic root of 40218422 is about 342.6165536508.

Adding to 40218422 its reverse (22481204), we get a palindrome (62699626).

The spelling of 40218422 in words is "forty million, two hundred eighteen thousand, four hundred twenty-two".