42042402222442 has 8 divisors (see below), whose sum is σ = 63308987004996. Its totient is φ = 20939406554112.

The previous prime is 42042402222419. The next prime is 42042402222463. The reversal of 42042402222442 is 24422220424024.

It can be written as a sum of positive squares in 2 ways, for example, as 35743311202041 + 6299091020401 = 5978571^2 + 2509799^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 42042402222398 and 42042402222407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40897277913 + ... + 40897278940.

Almost surely, 2^{42042402222442} is an apocalyptic number.

42042402222442 is a deficient number, since it is larger than the sum of its proper divisors (21266584782554).

42042402222442 is a wasteful number, since it uses less digits than its factorization.

42042402222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81794557112.

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

Adding to 42042402222442 its reverse (24422220424024), we get a palindrome (66464622646466).

The spelling of 42042402222442 in words is "forty-two trillion, forty-two billion, four hundred two million, two hundred twenty-two thousand, four hundred forty-two".