42011255257 has 2 divisors, whose sum is σ = 42011255258. Its totient is φ = 42011255256.

The previous prime is 42011255179. The next prime is 42011255261. The reversal of 42011255257 is 75255211024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21377656521 + 20633598736 = 146211^2 + 143644^2 .

It is a cyclic number.

It is not a de Polignac number, because 42011255257 - 2¹⁹ = 42010730969 is a prime.

It is not a weakly prime, because it can be changed into another prime (42011255267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21005627628 + 21005627629.

It is an arithmetic number, because the mean of its divisors is an integer number (21005627629).

Almost surely, 2^42011255257 is an apocalyptic number.

It is an amenable number.

42011255257 is a deficient number, since it is larger than the sum of its proper divisors (1).

42011255257 is an equidigital number, since it uses as much as digits as its factorization.

42011255257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 42011255257 in words is "forty-two billion, eleven million, two hundred fifty-five thousand, two hundred fifty-seven".