42244133242 has 4 divisors (see below), whose sum is σ = 63366199866. Its totient is φ = 21122066620.

The previous prime is 42244133237. The next prime is 42244133249. The reversal of 42244133242 is 24233144224.

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., 36882818401 + 5361314841 = 192049^2 + 73221^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42244133249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561033309 + ... + 10561033312.

Almost surely, 2^42244133242 is an apocalyptic number.

42244133242 is a deficient number, since it is larger than the sum of its proper divisors (21122066624).

42244133242 is a wasteful number, since it uses less digits than its factorization.

42244133242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21122066623.

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

Adding to 42244133242 its reverse (24233144224), we get a palindrome (66477277466).

The spelling of 42244133242 in words is "forty-two billion, two hundred forty-four million, one hundred thirty-three thousand, two hundred forty-two".