202421201243 has 8 divisors (see below), whose sum is σ = 208735108608. Its totient is φ = 196190922024.

The previous prime is 202421201233. The next prime is 202421201251. The reversal of 202421201243 is 342102124202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202421201243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202421201233) 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, 20902121 + ... + 20911802.

It is an arithmetic number, because the mean of its divisors is an integer number (26091888576).

Almost surely, 2^202421201243 is an apocalyptic number.

202421201243 is a deficient number, since it is larger than the sum of its proper divisors (6313907365).

202421201243 is a wasteful number, since it uses less digits than its factorization.

202421201243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41814073.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 202421201243 its reverse (342102124202), we get a palindrome (544523325445).

The spelling of 202421201243 in words is "two hundred two billion, four hundred twenty-one million, two hundred one thousand, two hundred forty-three".