42402002242 has 16 divisors (see below), whose sum is σ = 67835928600. Its totient is φ = 19808232448.

The previous prime is 42402002231. The next prime is 42402002249. The reversal of 42402002242 is 24220020424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38227679361 + 4174322881 = 195519^2 + 64609^2 .

It is not an unprimeable number, because it can be changed into a prime (42402002249) 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, 4546867 + ... + 4556182.

Almost surely, 2^42402002242 is an apocalyptic number.

42402002242 is a deficient number, since it is larger than the sum of its proper divisors (25433926358).

42402002242 is a wasteful number, since it uses less digits than its factorization.

42402002242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9103205.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 42402002242 its reverse (24220020424), we get a palindrome (66622022666).

The spelling of 42402002242 in words is "forty-two billion, four hundred two million, two thousand, two hundred forty-two".