40342043 has 12 divisors (see below), whose sum is σ = 47209680. Its totient is φ = 34371792.

The previous prime is 40342039. The next prime is 40342079. The reversal of 40342043 is 34024304.

It is a happy number.

40342043 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 40342043 - 2² = 40342039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342013) 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 11 ways as a sum of consecutive naturals, for example, 6098 + ... + 10856.

It is an arithmetic number, because the mean of its divisors is an integer number (3934140).

Almost surely, 2^40342043 is an apocalyptic number.

40342043 is a deficient number, since it is larger than the sum of its proper divisors (6867637).

40342043 is a wasteful number, since it uses less digits than its factorization.

40342043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40342043 is about 6351.5386324890. The cubic root of 40342043 is about 342.9672327437.

Adding to 40342043 its reverse (34024304), we get a palindrome (74366347).

The spelling of 40342043 in words is "forty million, three hundred forty-two thousand, forty-three".