42104147 has 4 divisors (see below), whose sum is σ = 42148656. Its totient is φ = 42059640.

The previous prime is 42104141. The next prime is 42104159. The reversal of 42104147 is 74140124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42104147 - 2⁴ = 42104131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42104141) 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, 20804 + ... + 22737.

It is an arithmetic number, because the mean of its divisors is an integer number (10537164).

Almost surely, 2^42104147 is an apocalyptic number.

42104147 is a deficient number, since it is larger than the sum of its proper divisors (44509).

42104147 is an equidigital number, since it uses as much as digits as its factorization.

42104147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44508.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 42104147 is about 6488.7708389186. The cubic root of 42104147 is about 347.8897430028.

The spelling of 42104147 in words is "forty-two million, one hundred four thousand, one hundred forty-seven".