42243255 has 32 divisors (see below), whose sum is σ = 75505920. Its totient is φ = 22407840.

The previous prime is 42243247. The next prime is 42243259. The reversal of 42243255 is 55234224.

It is a happy number.

It is not a de Polignac number, because 42243255 - 2³ = 42243247 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 (42243259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27744 + ... + 29226.

It is an arithmetic number, because the mean of its divisors is an integer number (2359560).

Almost surely, 2^42243255 is an apocalyptic number.

42243255 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42243255 is a deficient number, since it is larger than the sum of its proper divisors (33262665).

42243255 is a wasteful number, since it uses less digits than its factorization.

42243255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1702 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 42243255 is about 6499.4811331367. The cubic root of 42243255 is about 348.2724531062.

Adding to 42243255 its reverse (55234224), we get a palindrome (97477479).

The spelling of 42243255 in words is "forty-two million, two hundred forty-three thousand, two hundred fifty-five".