42251903 has 2 divisors, whose sum is σ = 42251904. Its totient is φ = 42251902.

The previous prime is 42251899. The next prime is 42251917. The reversal of 42251903 is 30915224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42251903 - 2² = 42251899 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42251933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21125951 + 21125952.

It is an arithmetic number, because the mean of its divisors is an integer number (21125952).

Almost surely, 2^42251903 is an apocalyptic number.

42251903 is a deficient number, since it is larger than the sum of its proper divisors (1).

42251903 is an equidigital number, since it uses as much as digits as its factorization.

42251903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 42251903 is about 6500.1463829671. The cubic root of 42251903 is about 348.2962174892.

It can be divided in two parts, 422 and 51903, that added together give a palindrome (52325).

The spelling of 42251903 in words is "forty-two million, two hundred fifty-one thousand, nine hundred three".