42046818 has 16 divisors (see below), whose sum is σ = 91738656. Its totient is φ = 12741440.

The previous prime is 42046817. The next prime is 42046841. The reversal of 42046818 is 81864024.

42046818 is nontrivially palindromic in base 13.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42046817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318471 + ... + 318602.

It is an arithmetic number, because the mean of its divisors is an integer number (5733666).

Almost surely, 2^42046818 is an apocalyptic number.

42046818 is an abundant number, since it is smaller than the sum of its proper divisors (49691838).

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

42046818 is a wasteful number, since it uses less digits than its factorization.

42046818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637089.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 42046818 is about 6484.3517794765. The cubic root of 42046818 is about 347.7317757451.

The spelling of 42046818 in words is "forty-two million, forty-six thousand, eight hundred eighteen".