42108255 has 48 divisors (see below), whose sum is σ = 86521344. Its totient is φ = 19245600.

The previous prime is 42108233. The next prime is 42108259. The reversal of 42108255 is 55280124.

It is a happy number.

It is not a de Polignac number, because 42108255 - 2⁶ = 42108191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42108259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6030 + ... + 10980.

It is an arithmetic number, because the mean of its divisors is an integer number (1802528).

Almost surely, 2^42108255 is an apocalyptic number.

42108255 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42108255 is an abundant number, since it is smaller than the sum of its proper divisors (44413089).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42108255 is an equidigital number, since it uses as much as digits as its factorization.

42108255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978 (or 4966 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 42108255 is about 6489.0873780525. The cubic root of 42108255 is about 347.9010568891.

Adding to 42108255 its reverse (55280124), we get a palindrome (97388379).

The spelling of 42108255 in words is "forty-two million, one hundred eight thousand, two hundred fifty-five".