40220242 has 8 divisors (see below), whose sum is σ = 60479100. Its totient is φ = 20060544.

The previous prime is 40220239. The next prime is 40220263. The reversal of 40220242 is 24202204.

40220242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 35772361 + 4447881 = 5981^2 + 2109^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 23767 + ... + 25402.

Almost surely, 2^40220242 is an apocalyptic number.

40220242 is a deficient number, since it is larger than the sum of its proper divisors (20258858).

40220242 is a wasteful number, since it uses less digits than its factorization.

40220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49580.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40220242 is about 6341.9430776380. The cubic root of 40220242 is about 342.6217217030.

Adding to 40220242 its reverse (24202204), we get a palindrome (64422446).

The spelling of 40220242 in words is "forty million, two hundred twenty thousand, two hundred forty-two".