40401242 has 8 divisors (see below), whose sum is σ = 69259296. Its totient is φ = 17314812.

The previous prime is 40401241. The next prime is 40401259. The reversal of 40401242 is 24210404.

40401242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40401242.

It is not an unprimeable number, because it can be changed into a prime (40401241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442888 + ... + 1442915.

It is an arithmetic number, because the mean of its divisors is an integer number (8657412).

Almost surely, 2^40401242 is an apocalyptic number.

40401242 is a deficient number, since it is larger than the sum of its proper divisors (28858054).

40401242 is a wasteful number, since it uses less digits than its factorization.

40401242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885812.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40401242 is about 6356.1971335068. The cubic root of 40401242 is about 343.1349105358.

Adding to 40401242 its reverse (24210404), we get a palindrome (64611646).

The spelling of 40401242 in words is "forty million, four hundred one thousand, two hundred forty-two".