42418805 has 32 divisors (see below), whose sum is σ = 61302528. Its totient is φ = 27763200.

The previous prime is 42418801. The next prime is 42418823. The reversal of 42418805 is 50881424.

It is a happy number.

It is not a de Polignac number, because 42418805 - 2² = 42418801 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42418801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28592 + ... + 30038.

It is an arithmetic number, because the mean of its divisors is an integer number (1915704).

Almost surely, 2^42418805 is an apocalyptic number.

It is an amenable number.

42418805 is a deficient number, since it is larger than the sum of its proper divisors (18883723).

42418805 is a wasteful number, since it uses less digits than its factorization.

42418805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 42418805 is about 6512.9720558283. The cubic root of 42418805 is about 348.7542241580.

The spelling of 42418805 in words is "forty-two million, four hundred eighteen thousand, eight hundred five".