42181146 has 24 divisors (see below), whose sum is σ = 104448864. Its totient is φ = 12051720.

The previous prime is 42181141. The next prime is 42181157. The reversal of 42181146 is 64118124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42181141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167260 + ... + 167511.

It is an arithmetic number, because the mean of its divisors is an integer number (4352036).

Almost surely, 2^42181146 is an apocalyptic number.

42181146 is an abundant number, since it is smaller than the sum of its proper divisors (62267718).

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

42181146 is a wasteful number, since it uses less digits than its factorization.

42181146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334786 (or 334783 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 42181146 is about 6494.7013788164. The cubic root of 42181146 is about 348.1016845143.

The spelling of 42181146 in words is "forty-two million, one hundred eighty-one thousand, one hundred forty-six".