40420422242 has 4 divisors (see below), whose sum is σ = 60630633366. Its totient is φ = 20210211120.

The previous prime is 40420422223. The next prime is 40420422247. The reversal of 40420422242 is 24222402404.

40420422242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 39303459001 + 1116963241 = 198251^2 + 33421^2 .

It is not an unprimeable number, because it can be changed into a prime (40420422247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105105559 + ... + 10105105562.

Almost surely, 2^40420422242 is an apocalyptic number.

40420422242 is a deficient number, since it is larger than the sum of its proper divisors (20210211124).

40420422242 is a wasteful number, since it uses less digits than its factorization.

40420422242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20210211123.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 40420422242 its reverse (24222402404), we get a palindrome (64642824646).

The spelling of 40420422242 in words is "forty billion, four hundred twenty million, four hundred twenty-two thousand, two hundred forty-two".