4043123400257 has 2 divisors, whose sum is σ = 4043123400258. Its totient is φ = 4043123400256.

The previous prime is 4043123400181. The next prime is 4043123400271. The reversal of 4043123400257 is 7520043213404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3554880222721 + 488243177536 = 1885439^2 + 698744^2 .

It is a cyclic number.

It is not a de Polignac number, because 4043123400257 - 2¹⁶ = 4043123334721 is a prime.

It is not a weakly prime, because it can be changed into another prime (4043123400287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021561700128 + 2021561700129.

It is an arithmetic number, because the mean of its divisors is an integer number (2021561700129).

Almost surely, 2^{4043123400257} is an apocalyptic number.

It is an amenable number.

4043123400257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4043123400257 is an equidigital number, since it uses as much as digits as its factorization.

4043123400257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 4043123400257 in words is "four trillion, forty-three billion, one hundred twenty-three million, four hundred thousand, two hundred fifty-seven".