40424218 has 8 divisors (see below), whose sum is σ = 60987348. Its totient is φ = 20095104.

The previous prime is 40424207. The next prime is 40424233. The reversal of 40424218 is 81242404.

It can be written as a sum of positive squares in 2 ways, for example, as 40411449 + 12769 = 6357^2 + 113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40424192 and 40424201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58071 + ... + 58762.

Almost surely, 2^40424218 is an apocalyptic number.

40424218 is a deficient number, since it is larger than the sum of its proper divisors (20563130).

40424218 is a wasteful number, since it uses less digits than its factorization.

40424218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117008.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 40424218 is about 6358.0042466170. The cubic root of 40424218 is about 343.1999446228.

The spelling of 40424218 in words is "forty million, four hundred twenty-four thousand, two hundred eighteen".