40120550 has 24 divisors (see below), whose sum is σ = 76448232. Its totient is φ = 15656000.

The previous prime is 40120547. The next prime is 40120559. The reversal of 40120550 is 5502104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7736 + ... + 11835.

It is an arithmetic number, because the mean of its divisors is an integer number (3185343).

Almost surely, 2^40120550 is an apocalyptic number.

40120550 is a deficient number, since it is larger than the sum of its proper divisors (36327682).

40120550 is a wasteful number, since it uses less digits than its factorization.

40120550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19624 (or 19619 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 40120550 is about 6334.0784649387. The cubic root of 40120550 is about 342.3384074420.

Adding to 40120550 its reverse (5502104), we get a palindrome (45622654).

The spelling of 40120550 in words is "forty million, one hundred twenty thousand, five hundred fifty".