40422442 has 4 divisors (see below), whose sum is σ = 60633666. Its totient is φ = 20211220.

The previous prime is 40422409. The next prime is 40422457. The reversal of 40422442 is 24422404.

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

It can be written as a sum of positive squares in only one way, i.e., 22857961 + 17564481 = 4781^2 + 4191^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10105609 + ... + 10105612.

Almost surely, 2^40422442 is an apocalyptic number.

40422442 is a deficient number, since it is larger than the sum of its proper divisors (20211224).

40422442 is a wasteful number, since it uses less digits than its factorization.

40422442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20211223.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 40422442 is about 6357.8645786144. The cubic root of 40422442 is about 343.1949184936.

Adding to 40422442 its reverse (24422404), we get a palindrome (64844846).

The spelling of 40422442 in words is "forty million, four hundred twenty-two thousand, four hundred forty-two".