42805255 has 8 divisors (see below), whose sum is σ = 51865632. Its totient is φ = 33911328.

The previous prime is 42805241. The next prime is 42805283. The reversal of 42805255 is 55250824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42805255 - 2⁷ = 42805127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41044 + ... + 42073.

It is an arithmetic number, because the mean of its divisors is an integer number (6483204).

Almost surely, 2^42805255 is an apocalyptic number.

42805255 is a deficient number, since it is larger than the sum of its proper divisors (9060377).

42805255 is a wasteful number, since it uses less digits than its factorization.

42805255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83225.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 42805255 is about 6542.5725062853. The cubic root of 42805255 is about 349.8101146873.

The spelling of 42805255 in words is "forty-two million, eight hundred five thousand, two hundred fifty-five".