42100330404442 has 16 divisors (see below), whose sum is σ = 63172496270664. Its totient is φ = 21042832104000.

The previous prime is 42100330404427. The next prime is 42100330404449. The reversal of 42100330404442 is 24440403300124.

It can be written as a sum of positive squares in 4 ways, for example, as 16554897450441 + 25545432954001 = 4068771^2 + 5054249^2 .

It is not an unprimeable number, because it can be changed into a prime (42100330404449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221181592 + ... + 221371852.

Almost surely, 2^{42100330404442} is an apocalyptic number.

42100330404442 is a deficient number, since it is larger than the sum of its proper divisors (21072165866222).

42100330404442 is a wasteful number, since it uses less digits than its factorization.

42100330404442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228225.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 42100330404442 its reverse (24440403300124), we get a palindrome (66540733704566).

The spelling of 42100330404442 in words is "forty-two trillion, one hundred billion, three hundred thirty million, four hundred four thousand, four hundred forty-two".