21442300043 has 8 divisors (see below), whose sum is σ = 21921192912. Its totient is φ = 20968079616.

The previous prime is 21442300031. The next prime is 21442300081. The reversal of 21442300043 is 34000324412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21442300043 - 2¹⁴ = 21442283659 is a prime.

It is a super-2 number, since 2×21442300043² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21442299991 and 21442300018.

It is not an unprimeable number, because it can be changed into a prime (21442300013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158830 + ... + 1177187.

It is an arithmetic number, because the mean of its divisors is an integer number (2740149114).

Almost surely, 2^21442300043 is an apocalyptic number.

21442300043 is a deficient number, since it is larger than the sum of its proper divisors (478892869).

21442300043 is a wasteful number, since it uses less digits than its factorization.

21442300043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336221.

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

Adding to 21442300043 its reverse (34000324412), we get a palindrome (55442624455).

The spelling of 21442300043 in words is "twenty-one billion, four hundred forty-two million, three hundred thousand, forty-three".