42047418 has 32 divisors (see below), whose sum is σ = 101168640. Its totient is φ = 11381040.

The previous prime is 42047417. The next prime is 42047431. The reversal of 42047418 is 81474024.

42047418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42047417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25548 + ... + 27143.

It is an arithmetic number, because the mean of its divisors is an integer number (3161520).

Almost surely, 2^42047418 is an apocalyptic number.

42047418 is an abundant number, since it is smaller than the sum of its proper divisors (59121222).

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

42047418 is a wasteful number, since it uses less digits than its factorization.

42047418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52722.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 42047418 is about 6484.3980445374. The cubic root of 42047418 is about 347.7334297591.

The spelling of 42047418 in words is "forty-two million, forty-seven thousand, four hundred eighteen".