42664204442 has 4 divisors (see below), whose sum is σ = 63996306666. Its totient is φ = 21332102220.

The previous prime is 42664204441. The next prime is 42664204477. The reversal of 42664204442 is 24440246624.

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., 25750941841 + 16913262601 = 160471^2 + 130051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42664204396 and 42664204405.

It is not an unprimeable number, because it can be changed into a prime (42664204441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666051109 + ... + 10666051112.

Almost surely, 2^42664204442 is an apocalyptic number.

42664204442 is a deficient number, since it is larger than the sum of its proper divisors (21332102224).

42664204442 is a wasteful number, since it uses less digits than its factorization.

42664204442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21332102223.

The product of its (nonzero) digits is 294912, while the sum is 38.

The spelling of 42664204442 in words is "forty-two billion, six hundred sixty-four million, two hundred four thousand, four hundred forty-two".