42444042442 has 4 divisors (see below), whose sum is σ = 63666063666. Its totient is φ = 21222021220.

The previous prime is 42444042437. The next prime is 42444042533. The reversal of 42444042442 is 24424044424.

42444042442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 32941887001 + 9502155441 = 181499^2 + 97479^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42444042398 and 42444042407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611010609 + ... + 10611010612.

Almost surely, 2^42444042442 is an apocalyptic number.

42444042442 is a deficient number, since it is larger than the sum of its proper divisors (21222021224).

42444042442 is a wasteful number, since it uses less digits than its factorization.

42444042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21222021223.

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

Adding to 42444042442 its reverse (24424044424), we get a palindrome (66868086866).

The spelling of 42444042442 in words is "forty-two billion, four hundred forty-four million, forty-two thousand, four hundred forty-two".