42018147 has 6 divisors (see below), whose sum is σ = 60692892. Its totient is φ = 28012092.

The previous prime is 42018131. The next prime is 42018157. The reversal of 42018147 is 74181024.

It is not a de Polignac number, because 42018147 - 2⁴ = 42018131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42018147.

It is not an unprimeable number, because it can be changed into a prime (42018127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2334333 + ... + 2334350.

It is an arithmetic number, because the mean of its divisors is an integer number (10115482).

Almost surely, 2^42018147 is an apocalyptic number.

42018147 is a deficient number, since it is larger than the sum of its proper divisors (18674745).

42018147 is a wasteful number, since it uses less digits than its factorization.

42018147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668689 (or 4668686 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 42018147 is about 6482.1406186537. The cubic root of 42018147 is about 347.6527203400.

The spelling of 42018147 in words is "forty-two million, eighteen thousand, one hundred forty-seven".