42021302243 has 4 divisors (see below), whose sum is σ = 43848315408. Its totient is φ = 40194289080.

The previous prime is 42021302237. The next prime is 42021302303. The reversal of 42021302243 is 34220312024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42021302243 - 2¹⁰ = 42021301219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1827013141 = 42021302243 / (4 + 2 + 0 + 2 + 1 + 3 + 0 + 2 + 2 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (42021302233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913506548 + ... + 913506593.

It is an arithmetic number, because the mean of its divisors is an integer number (10962078852).

Almost surely, 2^42021302243 is an apocalyptic number.

42021302243 is a deficient number, since it is larger than the sum of its proper divisors (1827013165).

42021302243 is a wasteful number, since it uses less digits than its factorization.

42021302243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827013164.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 42021302243 its reverse (34220312024), we get a palindrome (76241614267).

The spelling of 42021302243 in words is "forty-two billion, twenty-one million, three hundred two thousand, two hundred forty-three".