40042049 has 8 divisors (see below), whose sum is σ = 41406720. Its totient is φ = 38682000.

The previous prime is 40042043. The next prime is 40042099. The reversal of 40042049 is 94024004.

It is a happy number.

40042049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40042049 - 2²⁰ = 38993473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40042043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31967 + ... + 33195.

It is an arithmetic number, because the mean of its divisors is an integer number (5175840).

Almost surely, 2^40042049 is an apocalyptic number.

It is an amenable number.

40042049 is a deficient number, since it is larger than the sum of its proper divisors (1364671).

40042049 is a wasteful number, since it uses less digits than its factorization.

40042049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40042049 is about 6327.8787124913. The cubic root of 40042049 is about 342.1149853319.

The spelling of 40042049 in words is "forty million, forty-two thousand, forty-nine".