42000418 has 16 divisors (see below), whose sum is σ = 64121400. Its totient is φ = 20630016.

The previous prime is 42000383. The next prime is 42000419. The reversal of 42000418 is 81400024.

It can be written as a sum of positive squares in 4 ways, for example, as 37785609 + 4214809 = 6147^2 + 2053^2 .

It is a super-2 number, since 2×42000418² = 3528070224349448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42000395 and 42000404.

It is not an unprimeable number, because it can be changed into a prime (42000419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28180 + ... + 29632.

Almost surely, 2^42000418 is an apocalyptic number.

42000418 is a deficient number, since it is larger than the sum of its proper divisors (22120982).

42000418 is a wasteful number, since it uses less digits than its factorization.

42000418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 42000418 is about 6480.7729477278. The cubic root of 42000418 is about 347.6038176429.

The spelling of 42000418 in words is "forty-two million, four hundred eighteen", and thus it is an aban number.