40403442 has 8 divisors (see below), whose sum is σ = 80806896. Its totient is φ = 13467812.

The previous prime is 40403417. The next prime is 40403449. The reversal of 40403442 is 24430404.

It is a sphenic number, since it is the product of 3 distinct primes.

40403442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (40403449) 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 3 ways as a sum of consecutive naturals, for example, 3366948 + ... + 3366959.

It is an arithmetic number, because the mean of its divisors is an integer number (10100862).

Almost surely, 2^40403442 is an apocalyptic number.

40403442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40403442 is a wasteful number, since it uses less digits than its factorization.

40403442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733912.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40403442 is about 6356.3701906041. The cubic root of 40403442 is about 343.1411387527.

Adding to 40403442 its reverse (24430404), we get a palindrome (64833846).

The spelling of 40403442 in words is "forty million, four hundred three thousand, four hundred forty-two".