42775903 has 2 divisors, whose sum is σ = 42775904. Its totient is φ = 42775902.

The previous prime is 42775891. The next prime is 42775907. The reversal of 42775903 is 30957724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42775903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42775907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387951 + 21387952.

It is an arithmetic number, because the mean of its divisors is an integer number (21387952).

Almost surely, 2^42775903 is an apocalyptic number.

42775903 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775903 is an equidigital number, since it uses as much as digits as its factorization.

42775903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 42775903 is about 6540.3289672615. The cubic root of 42775903 is about 349.7301402835.

The spelling of 42775903 in words is "forty-two million, seven hundred seventy-five thousand, nine hundred three".