202434121 has 2 divisors, whose sum is σ = 202434122. Its totient is φ = 202434120.

The previous prime is 202434119. The next prime is 202434131. The reversal of 202434121 is 121434202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195860025 + 6574096 = 13995^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 202434121 - 2¹ = 202434119 is a prime.

Together with 202434119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (202434131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101217060 + 101217061.

It is an arithmetic number, because the mean of its divisors is an integer number (101217061).

Almost surely, 2^202434121 is an apocalyptic number.

It is an amenable number.

202434121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202434121 is an equidigital number, since it uses as much as digits as its factorization.

202434121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 202434121 is about 14227.9345303526. The cubic root of 202434121 is about 587.1664583880.

Adding to 202434121 its reverse (121434202), we get a palindrome (323868323).

The spelling of 202434121 in words is "two hundred two million, four hundred thirty-four thousand, one hundred twenty-one".