203402404157 has 2 divisors, whose sum is σ = 203402404158. Its totient is φ = 203402404156.

The previous prime is 203402404039. The next prime is 203402404181. The reversal of 203402404157 is 751404204302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106074627481 + 97327776676 = 325691^2 + 311974^2 .

It is a cyclic number.

It is not a de Polignac number, because 203402404157 - 2¹⁶ = 203402338621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203402407157) 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 as a sum of consecutive naturals, namely, 101701202078 + 101701202079.

It is an arithmetic number, because the mean of its divisors is an integer number (101701202079).

Almost surely, 2^203402404157 is an apocalyptic number.

It is an amenable number.

203402404157 is a deficient number, since it is larger than the sum of its proper divisors (1).

203402404157 is an equidigital number, since it uses as much as digits as its factorization.

203402404157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 203402404157 its reverse (751404204302), we get a palindrome (954806608459).

The spelling of 203402404157 in words is "two hundred three billion, four hundred two million, four hundred four thousand, one hundred fifty-seven".