202440004253 has 2 divisors, whose sum is σ = 202440004254. Its totient is φ = 202440004252.

The previous prime is 202440004219. The next prime is 202440004271. The reversal of 202440004253 is 352400044202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192311192089 + 10128812164 = 438533^2 + 100642^2 .

It is a cyclic number.

It is not a de Polignac number, because 202440004253 - 2⁶ = 202440004189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202440004453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101220002126 + 101220002127.

It is an arithmetic number, because the mean of its divisors is an integer number (101220002127).

Almost surely, 2^202440004253 is an apocalyptic number.

It is an amenable number.

202440004253 is a deficient number, since it is larger than the sum of its proper divisors (1).

202440004253 is an equidigital number, since it uses as much as digits as its factorization.

202440004253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 202440004253 its reverse (352400044202), we get a palindrome (554840048455).

The spelling of 202440004253 in words is "two hundred two billion, four hundred forty million, four thousand, two hundred fifty-three".