40004122 has 4 divisors (see below), whose sum is σ = 60006186. Its totient is φ = 20002060.

The previous prime is 40004119. The next prime is 40004131. The reversal of 40004122 is 22140004.

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., 24393721 + 15610401 = 4939^2 + 3951^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 10001029 + ... + 10001032.

Almost surely, 2^40004122 is an apocalyptic number.

40004122 is a deficient number, since it is larger than the sum of its proper divisors (20002064).

40004122 is a wasteful number, since it uses less digits than its factorization.

40004122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20002063.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 40004122 is about 6324.8811846548. The cubic root of 40004122 is about 342.0069364666.

Adding to 40004122 its reverse (22140004), we get a palindrome (62144126).

The spelling of 40004122 in words is "forty million, four thousand, one hundred twenty-two".