42571306903 has 2 divisors, whose sum is σ = 42571306904. Its totient is φ = 42571306902.

The previous prime is 42571306829. The next prime is 42571306913. The reversal of 42571306903 is 30960317524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42571306903 - 2¹⁷ = 42571175831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42571306913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21285653451 + 21285653452.

It is an arithmetic number, because the mean of its divisors is an integer number (21285653452).

Almost surely, 2^42571306903 is an apocalyptic number.

42571306903 is a deficient number, since it is larger than the sum of its proper divisors (1).

42571306903 is an equidigital number, since it uses as much as digits as its factorization.

42571306903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 42571306903 in words is "forty-two billion, five hundred seventy-one million, three hundred six thousand, nine hundred three".