42243320021 has 16 divisors (see below), whose sum is σ = 49463930880. Its totient is φ = 35324130480.

The previous prime is 42243320011. The next prime is 42243320051. The reversal of 42243320021 is 12002334224.

It is a cyclic number.

It is not a de Polignac number, because 42243320021 - 2³⁴ = 25063450837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243320011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104111 + ... + 308748.

It is an arithmetic number, because the mean of its divisors is an integer number (3091495680).

Almost surely, 2^42243320021 is an apocalyptic number.

It is an amenable number.

42243320021 is a deficient number, since it is larger than the sum of its proper divisors (7220610859).

42243320021 is a wasteful number, since it uses less digits than its factorization.

42243320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413224.

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

Adding to 42243320021 its reverse (12002334224), we get a palindrome (54245654245).

The spelling of 42243320021 in words is "forty-two billion, two hundred forty-three million, three hundred twenty thousand, twenty-one".