42404255 has 4 divisors (see below), whose sum is σ = 50885112. Its totient is φ = 33923400.

The previous prime is 42404251. The next prime is 42404261. The reversal of 42404255 is 55240424.

42404255 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 42404255 - 2² = 42404251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404251) by changing a digit.

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, 4240421 + ... + 4240430.

It is an arithmetic number, because the mean of its divisors is an integer number (12721278).

Almost surely, 2^42404255 is an apocalyptic number.

42404255 is a deficient number, since it is larger than the sum of its proper divisors (8480857).

42404255 is an equidigital number, since it uses as much as digits as its factorization.

42404255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480856.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 42404255 is about 6511.8549584585. The cubic root of 42404255 is about 348.7143444061.

Adding to 42404255 its reverse (55240424), we get a palindrome (97644679).

The spelling of 42404255 in words is "forty-two million, four hundred four thousand, two hundred fifty-five".