243422421401 has 4 divisors (see below), whose sum is σ = 243424610100. Its totient is φ = 243420232704.

The previous prime is 243422421383. The next prime is 243422421433. The reversal of 243422421401 is 104124224342.

It is a happy number.

243422421401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104124224342 = 2 ⋅52062112171.

It can be written as a sum of positive squares in 2 ways, for example, as 135000395776 + 108422025625 = 367424^2 + 329275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243422421401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243422421461) 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, 918056 + ... + 1153113.

It is an arithmetic number, because the mean of its divisors is an integer number (60856152525).

Almost surely, 2^243422421401 is an apocalyptic number.

It is an amenable number.

243422421401 is a deficient number, since it is larger than the sum of its proper divisors (2188699).

243422421401 is a wasteful number, since it uses less digits than its factorization.

243422421401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188698.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 243422421401 its reverse (104124224342), we get a palindrome (347546645743).

The spelling of 243422421401 in words is "two hundred forty-three billion, four hundred twenty-two million, four hundred twenty-one thousand, four hundred one".