257426203 has 2 divisors, whose sum is σ = 257426204. Its totient is φ = 257426202.

The previous prime is 257426179. The next prime is 257426209. The reversal of 257426203 is 302624752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257426203 - 2¹³ = 257418011 is a prime.

It is not a weakly prime, because it can be changed into another prime (257426209) 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 as a sum of consecutive naturals, namely, 128713101 + 128713102.

It is an arithmetic number, because the mean of its divisors is an integer number (128713102).

Almost surely, 2^257426203 is an apocalyptic number.

257426203 is a deficient number, since it is larger than the sum of its proper divisors (1).

257426203 is an equidigital number, since it uses as much as digits as its factorization.

257426203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 257426203 is about 16044.5069416296. The cubic root of 257426203 is about 636.1373816522.

The spelling of 257426203 in words is "two hundred fifty-seven million, four hundred twenty-six thousand, two hundred three".