42002442243 has 32 divisors (see below), whose sum is σ = 65713697280. Its totient is φ = 26461432800.

The previous prime is 42002442239. The next prime is 42002442253. The reversal of 42002442243 is 34224420024.

It is not a de Polignac number, because 42002442243 - 2² = 42002442239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42002442253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355908 + ... + 458993.

It is an arithmetic number, because the mean of its divisors is an integer number (2053553040).

Almost surely, 2^42002442243 is an apocalyptic number.

42002442243 is a deficient number, since it is larger than the sum of its proper divisors (23711255037).

42002442243 is a wasteful number, since it uses less digits than its factorization.

42002442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815016 (or 815010 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 42002442243 its reverse (34224420024), we get a palindrome (76226862267).

The spelling of 42002442243 in words is "forty-two billion, two million, four hundred forty-two thousand, two hundred forty-three".