42273855 has 48 divisors (see below), whose sum is σ = 79672320. Its totient is φ = 20611584.

The previous prime is 42273823. The next prime is 42273877. The reversal of 42273855 is 55837224.

It is not a de Polignac number, because 42273855 - 2⁵ = 42273823 is a prime.

It is a super-2 number, since 2×42273855² = 3574157633122050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74011 + ... + 74579.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 2^42273855 is an apocalyptic number.

42273855 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42273855 is a deficient number, since it is larger than the sum of its proper divisors (37398465).

42273855 is a wasteful number, since it uses less digits than its factorization.

42273855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 717 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 42273855 is about 6501.8347410558. The cubic root of 42273855 is about 348.3565262112.

The spelling of 42273855 in words is "forty-two million, two hundred seventy-three thousand, eight hundred fifty-five".