40120844 has 24 divisors (see below), whose sum is σ = 71442000. Its totient is φ = 19712000.

The previous prime is 40120819. The next prime is 40120853. The reversal of 40120844 is 44802104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89132 + ... + 89580.

It is an arithmetic number, because the mean of its divisors is an integer number (2976750).

Almost surely, 2^40120844 is an apocalyptic number.

It is an amenable number.

40120844 is a deficient number, since it is larger than the sum of its proper divisors (31321156).

40120844 is a wasteful number, since it uses less digits than its factorization.

40120844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 40120844 is about 6334.1016726920. The cubic root of 40120844 is about 342.3392436489.

Adding to 40120844 its reverse (44802104), we get a palindrome (84922948).

The spelling of 40120844 in words is "forty million, one hundred twenty thousand, eight hundred forty-four".