202434289 has 4 divisors (see below), whose sum is σ = 207905524. Its totient is φ = 196963056.

The previous prime is 202434259. The next prime is 202434301. The reversal of 202434289 is 982434202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982434202 = 2 ⋅491217101.

It can be written as a sum of positive squares in 2 ways, for example, as 190219264 + 12215025 = 13792^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 202434289 - 2¹³ = 202426097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202434259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735562 + ... + 2735635.

It is an arithmetic number, because the mean of its divisors is an integer number (51976381).

Almost surely, 2^202434289 is an apocalyptic number.

It is an amenable number.

202434289 is a deficient number, since it is larger than the sum of its proper divisors (5471235).

202434289 is an equidigital number, since it uses as much as digits as its factorization.

202434289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5471234.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 202434289 is about 14227.9404342301. The cubic root of 202434289 is about 587.1666208177.

The spelling of 202434289 in words is "two hundred two million, four hundred thirty-four thousand, two hundred eighty-nine".