40075418 has 4 divisors (see below), whose sum is σ = 60113130. Its totient is φ = 20037708.

The previous prime is 40075417. The next prime is 40075423. The reversal of 40075418 is 81457004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 35844169 + 4231249 = 5987^2 + 2057^2 .

It is not an unprimeable number, because it can be changed into a prime (40075417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10018853 + ... + 10018856.

Almost surely, 2^40075418 is an apocalyptic number.

40075418 is a deficient number, since it is larger than the sum of its proper divisors (20037712).

40075418 is a wasteful number, since it uses less digits than its factorization.

40075418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20037711.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 40075418 is about 6330.5148289851. The cubic root of 40075418 is about 342.2099926681.

The spelling of 40075418 in words is "forty million, seventy-five thousand, four hundred eighteen".