42338155 has 4 divisors (see below), whose sum is σ = 50805792. Its totient is φ = 33870520.

The previous prime is 42338141. The next prime is 42338159. The reversal of 42338155 is 55183324.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42338155 - 2⁵ = 42338123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42338159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4233811 + ... + 4233820.

It is an arithmetic number, because the mean of its divisors is an integer number (12701448).

Almost surely, 2^42338155 is an apocalyptic number.

42338155 is a deficient number, since it is larger than the sum of its proper divisors (8467637).

42338155 is an equidigital number, since it uses as much as digits as its factorization.

42338155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8467636.

The product of its digits is 14400, while the sum is 31.

The square root of 42338155 is about 6506.7776202972. Note that the first 3 decimals coincide. The cubic root of 42338155 is about 348.5330575252.

The spelling of 42338155 in words is "forty-two million, three hundred thirty-eight thousand, one hundred fifty-five".