40212039 has 16 divisors (see below), whose sum is σ = 61885440. Its totient is φ = 22749600.

The previous prime is 40212031. The next prime is 40212041. The reversal of 40212039 is 93021204.

40212039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40212039 - 2³ = 40212031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212031) 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 15 ways as a sum of consecutive naturals, for example, 7359 + ... + 11600.

It is an arithmetic number, because the mean of its divisors is an integer number (3867840).

Almost surely, 2^40212039 is an apocalyptic number.

40212039 is a deficient number, since it is larger than the sum of its proper divisors (21673401).

40212039 is a wasteful number, since it uses less digits than its factorization.

40212039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19070.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40212039 is about 6341.2963185771. The cubic root of 40212039 is about 342.5984273208.

The spelling of 40212039 in words is "forty million, two hundred twelve thousand, thirty-nine".