202434120421 has 8 divisors (see below), whose sum is σ = 218019903584. Its totient is φ = 186850326960.

The previous prime is 202434120377. The next prime is 202434120457. The reversal of 202434120421 is 124021434202.

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 202434120421 - 2¹³ = 202434112229 is a prime.

It is a super-2 number, since 2×202434120421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202434120491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282675 + ... + 696256.

It is an arithmetic number, because the mean of its divisors is an integer number (27252487948).

Almost surely, 2^202434120421 is an apocalyptic number.

It is an amenable number.

202434120421 is a deficient number, since it is larger than the sum of its proper divisors (15585783163).

202434120421 is a wasteful number, since it uses less digits than its factorization.

202434120421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994851.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 202434120421 its reverse (124021434202), we get a palindrome (326455554623).

The spelling of 202434120421 in words is "two hundred two billion, four hundred thirty-four million, one hundred twenty thousand, four hundred twenty-one".