42243319994 has 4 divisors (see below), whose sum is σ = 63364979994. Its totient is φ = 21121659996.

The previous prime is 42243319973. The next prime is 42243319999. The reversal of 42243319994 is 49991334224.

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., 41366271769 + 877048225 = 203387^2 + 29615^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42243319999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560829997 + ... + 10560830000.

Almost surely, 2^42243319994 is an apocalyptic number.

42243319994 is a deficient number, since it is larger than the sum of its proper divisors (21121660000).

42243319994 is a wasteful number, since it uses less digits than its factorization.

42243319994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21121659999.

The product of its digits is 1679616, while the sum is 50.

The spelling of 42243319994 in words is "forty-two billion, two hundred forty-three million, three hundred nineteen thousand, nine hundred ninety-four".