40920041 has 4 divisors (see below), whose sum is σ = 41020500. Its totient is φ = 40819584.

The previous prime is 40920023. The next prime is 40920067. The reversal of 40920041 is 14002904.

40920041 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 15960025 + 24960016 = 3995^2 + 4996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40920041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40919995 and 40920022.

It is not an unprimeable number, because it can be changed into a prime (40920001) 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, 49616 + ... + 50433.

It is an arithmetic number, because the mean of its divisors is an integer number (10255125).

Almost surely, 2^40920041 is an apocalyptic number.

It is an amenable number.

40920041 is a deficient number, since it is larger than the sum of its proper divisors (100459).

40920041 is a wasteful number, since it uses less digits than its factorization.

40920041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100458.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 40920041 is about 6396.8774413772. The cubic root of 40920041 is about 344.5974188087.

Adding to 40920041 its reverse (14002904), we get a palindrome (54922945).

It can be divided in two parts, 409 and 20041, that multiplied together give a square (8196769 = 2863²).

The spelling of 40920041 in words is "forty million, nine hundred twenty thousand, forty-one".