40129266 has 8 divisors (see below), whose sum is σ = 80258544. Its totient is φ = 13376420.

The previous prime is 40129261. The next prime is 40129279. The reversal of 40129266 is 66292104.

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

40129266 is an admirable number.

It is a super-2 number, since 2×40129266² = 3220715979397512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40129261) 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, 3344100 + ... + 3344111.

It is an arithmetic number, because the mean of its divisors is an integer number (10032318).

Almost surely, 2^40129266 is an apocalyptic number.

40129266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40129266 is a wasteful number, since it uses less digits than its factorization.

40129266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688216.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 40129266 is about 6334.7664518907. The cubic root of 40129266 is about 342.3631961144.

The spelling of 40129266 in words is "forty million, one hundred twenty-nine thousand, two hundred sixty-six".