202421243105 has 8 divisors (see below), whose sum is σ = 243734522472. Its totient is φ = 161384307328.

The previous prime is 202421243077. The next prime is 202421243111. The reversal of 202421243105 is 501342124202.

202421243105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 135662568976 + 66758674129 = 368324^2 + 258377^2 .

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 202421243105 - 2⁶ = 202421243041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 69084284 + ... + 69087213.

It is an arithmetic number, because the mean of its divisors is an integer number (30466815309).

Almost surely, 2^202421243105 is an apocalyptic number.

It is an amenable number.

202421243105 is a deficient number, since it is larger than the sum of its proper divisors (41313279367).

202421243105 is a wasteful number, since it uses less digits than its factorization.

202421243105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138171795.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 202421243105 its reverse (501342124202), we get a palindrome (703763367307).

The spelling of 202421243105 in words is "two hundred two billion, four hundred twenty-one million, two hundred forty-three thousand, one hundred five".