202421133242 has 8 divisors (see below), whose sum is σ = 305386796916. Its totient is φ = 100625534272.

The previous prime is 202421133241. The next prime is 202421133269. The reversal of 202421133242 is 242331124202.

It can be written as a sum of positive squares in 2 ways, for example, as 201474401881 + 946731361 = 448859^2 + 30769^2 .

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

It is not an unprimeable number, because it can be changed into a prime (202421133241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292515743 + ... + 292516434.

Almost surely, 2^202421133242 is an apocalyptic number.

202421133242 is a deficient number, since it is larger than the sum of its proper divisors (102965663674).

202421133242 is a wasteful number, since it uses less digits than its factorization.

202421133242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585032352.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 202421133242 its reverse (242331124202), we get a palindrome (444752257444).

The spelling of 202421133242 in words is "two hundred two billion, four hundred twenty-one million, one hundred thirty-three thousand, two hundred forty-two".