40240422442042 has 4 divisors (see below), whose sum is σ = 60360633663066. Its totient is φ = 20120211221020.

The previous prime is 40240422441881. The next prime is 40240422442049. The reversal of 40240422442042 is 24024422404204.

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., 33501626987481 + 6738795454561 = 5788059^2 + 2595919^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40240422441989 and 40240422442007.

It is not an unprimeable number, because it can be changed into a prime (40240422442049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060105610509 + ... + 10060105610512.

Almost surely, 2^{40240422442042} is an apocalyptic number.

40240422442042 is a deficient number, since it is larger than the sum of its proper divisors (20120211221024).

40240422442042 is a wasteful number, since it uses less digits than its factorization.

40240422442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20120211221023.

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 40240422442042 its reverse (24024422404204), we get a palindrome (64264844846246).

The spelling of 40240422442042 in words is "forty trillion, two hundred forty billion, four hundred twenty-two million, four hundred forty-two thousand, forty-two".