40340245 has 8 divisors (see below), whose sum is σ = 52809120. Its totient is φ = 29338320.

The previous prime is 40340243. The next prime is 40340257. The reversal of 40340245 is 54204304.

It is a happy number.

40340245 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 not a de Polignac number, because 40340245 - 2¹ = 40340243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340243) 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, 366675 + ... + 366784.

It is an arithmetic number, because the mean of its divisors is an integer number (6601140).

Almost surely, 2^40340245 is an apocalyptic number.

It is an amenable number.

40340245 is a deficient number, since it is larger than the sum of its proper divisors (12468875).

40340245 is a wasteful number, since it uses less digits than its factorization.

40340245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733475.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40340245 is about 6351.3970904046. The cubic root of 40340245 is about 342.9621374453.

Adding to 40340245 its reverse (54204304), we get a palindrome (94544549).

The spelling of 40340245 in words is "forty million, three hundred forty thousand, two hundred forty-five".