42240442042 has 16 divisors (see below), whose sum is σ = 63708418152. Its totient is φ = 21004369920.

The previous prime is 42240442031. The next prime is 42240442051. The reversal of 42240442042 is 24024404224.

It can be written as a sum of positive squares in 4 ways, for example, as 30366199081 + 11874242961 = 174259^2 + 108969^2 .

It is a super-2 number, since 2×42240442042² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42240442042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1404442 + ... + 1434202.

Almost surely, 2^42240442042 is an apocalyptic number.

42240442042 is a deficient number, since it is larger than the sum of its proper divisors (21467976110).

42240442042 is a wasteful number, since it uses less digits than its factorization.

42240442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33633.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 42240442042 its reverse (24024404224), we get a palindrome (66264846266).

The spelling of 42240442042 in words is "forty-two billion, two hundred forty million, four hundred forty-two thousand, forty-two".