42000255 has 32 divisors (see below), whose sum is σ = 81457920. Its totient is φ = 20363040.

The previous prime is 42000247. The next prime is 42000289. The reversal of 42000255 is 55200024.

It is not a de Polignac number, because 42000255 - 2³ = 42000247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12657 + ... + 15626.

It is an arithmetic number, because the mean of its divisors is an integer number (2545560).

Almost surely, 2^42000255 is an apocalyptic number.

42000255 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42000255 is a deficient number, since it is larger than the sum of its proper divisors (39457665).

42000255 is a wasteful number, since it uses less digits than its factorization.

42000255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28308 (or 28302 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 42000255 is about 6480.7603720551. The cubic root of 42000255 is about 347.6033679688.

Adding to 42000255 its reverse (55200024), we get a palindrome (97200279).

The spelling of 42000255 in words is "forty-two million, two hundred fifty-five", and thus it is an aban number.