40056242 has 4 divisors (see below), whose sum is σ = 60084366. Its totient is φ = 20028120.

The previous prime is 40056229. The next prime is 40056253. The reversal of 40056242 is 24265004.

40056242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 6329²+1.

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., 40056241 + 1 = 6329^2 + 1^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10014059 + ... + 10014062.

Almost surely, 2^40056242 is an apocalyptic number.

40056242 is a deficient number, since it is larger than the sum of its proper divisors (20028124).

40056242 is a wasteful number, since it uses less digits than its factorization.

40056242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028123.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40056242 is about 6329.0000790014. Note that the first 4 decimals coincide. The cubic root of 40056242 is about 342.1554017152.

The spelling of 40056242 in words is "forty million, fifty-six thousand, two hundred forty-two".