42055238 has 8 divisors (see below), whose sum is σ = 63141120. Its totient is φ = 21008200.

The previous prime is 42055231. The next prime is 42055253. The reversal of 42055238 is 83255024.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42055238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42055231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6833 + ... + 11436.

It is an arithmetic number, because the mean of its divisors is an integer number (7892640).

Almost surely, 2^42055238 is an apocalyptic number.

42055238 is a deficient number, since it is larger than the sum of its proper divisors (21085882).

42055238 is a wasteful number, since it uses less digits than its factorization.

42055238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19422.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 42055238 is about 6485.0010023130. The cubic root of 42055238 is about 347.7549856357.

The spelling of 42055238 in words is "forty-two million, fifty-five thousand, two hundred thirty-eight".