42403255 has 4 divisors (see below), whose sum is σ = 50883912. Its totient is φ = 33922600.

The previous prime is 42403247. The next prime is 42403261. The reversal of 42403255 is 55230424.

42403255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42403255 - 2³ = 42403247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4240321 + ... + 4240330.

It is an arithmetic number, because the mean of its divisors is an integer number (12720978).

Almost surely, 2^42403255 is an apocalyptic number.

42403255 is a deficient number, since it is larger than the sum of its proper divisors (8480657).

42403255 is an equidigital number, since it uses as much as digits as its factorization.

42403255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480656.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 42403255 is about 6511.7781749688. The cubic root of 42403255 is about 348.7116031947.

Adding to 42403255 its reverse (55230424), we get a palindrome (97633679).

The spelling of 42403255 in words is "forty-two million, four hundred three thousand, two hundred fifty-five".