40342285 has 4 divisors (see below), whose sum is σ = 48410748. Its totient is φ = 32273824.

The previous prime is 40342283. The next prime is 40342297. The reversal of 40342285 is 58224304.

40342285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4186116 + 36156169 = 2046^2 + 6013^2 .

It is a cyclic number.

It is not a de Polignac number, because 40342285 - 2¹ = 40342283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342283) 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 3 ways as a sum of consecutive naturals, for example, 4034224 + ... + 4034233.

It is an arithmetic number, because the mean of its divisors is an integer number (12102687).

Almost surely, 2^40342285 is an apocalyptic number.

It is an amenable number.

40342285 is a deficient number, since it is larger than the sum of its proper divisors (8068463).

40342285 is an equidigital number, since it uses as much as digits as its factorization.

40342285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068462.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 40342285 is about 6351.5576829625. The cubic root of 40342285 is about 342.9679185287.

Adding to 40342285 its reverse (58224304), we get a palindrome (98566589).

The spelling of 40342285 in words is "forty million, three hundred forty-two thousand, two hundred eighty-five".