40166123 has 4 divisors (see below), whose sum is σ = 40179720. Its totient is φ = 40152528.

The previous prime is 40166099. The next prime is 40166141. The reversal of 40166123 is 32166104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40166123 - 2¹⁸ = 39903979 is a prime.

It is a super-2 number, since 2×40166123² = 3226634873702258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40166143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290 + ... + 8967.

It is an arithmetic number, because the mean of its divisors is an integer number (10044930).

Almost surely, 2^40166123 is an apocalyptic number.

40166123 is a deficient number, since it is larger than the sum of its proper divisors (13597).

40166123 is an equidigital number, since it uses as much as digits as its factorization.

40166123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13596.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40166123 is about 6337.6748891056. The cubic root of 40166123 is about 342.4679793177.

The spelling of 40166123 in words is "forty million, one hundred sixty-six thousand, one hundred twenty-three".