40342045 has 16 divisors (see below), whose sum is σ = 50911920. Its totient is φ = 30643200.

The previous prime is 40342039. The next prime is 40342079. The reversal of 40342045 is 54024304.

It is a happy number.

40342045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 7474756 + 32867289 = 2734^2 + 5733^2 .

It is not a de Polignac number, because 40342045 - 2⁵ = 40342013 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 6565 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (3181995).

Almost surely, 2^40342045 is an apocalyptic number.

It is an amenable number.

40342045 is a deficient number, since it is larger than the sum of its proper divisors (10569875).

40342045 is a wasteful number, since it uses less digits than its factorization.

40342045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656.

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

The square root of 40342045 is about 6351.5387899311. The cubic root of 40342045 is about 342.9672384114.

Adding to 40342045 its reverse (54024304), we get a palindrome (94366349).

The spelling of 40342045 in words is "forty million, three hundred forty-two thousand, forty-five".