40166144 has 18 divisors (see below), whose sum is σ = 80175900. Its totient is φ = 20082944.

The previous prime is 40166143. The next prime is 40166177. The reversal of 40166144 is 44166104.

It is a super-2 number, since 2×40166144² = 3226638247657472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40166141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78194 + ... + 78705.

Almost surely, 2^40166144 is an apocalyptic number.

It is an amenable number.

40166144 is a deficient number, since it is larger than the sum of its proper divisors (40009756).

40166144 is an equidigital number, since it uses as much as digits as its factorization.

40166144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156915 (or 156901 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40166144 is about 6337.6765458644. The cubic root of 40166144 is about 342.4680390017.

The spelling of 40166144 in words is "forty million, one hundred sixty-six thousand, one hundred forty-four".