40740165 has 28 divisors (see below), whose sum is σ = 73305324. Its totient is φ = 21726144.

The previous prime is 40740163. The next prime is 40740173. The reversal of 40740165 is 56104704.

40740165 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 2 ways, for example, as 26040609 + 14699556 = 5103^2 + 3834^2 .

It is not a de Polignac number, because 40740165 - 2¹ = 40740163 is a prime.

It is a super-2 number, since 2×40740165² = 3319522088454450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40740163) 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 27 ways as a sum of consecutive naturals, for example, 1944 + ... + 9233.

Almost surely, 2^40740165 is an apocalyptic number.

40740165 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40740165 is a deficient number, since it is larger than the sum of its proper divisors (32565159).

40740165 is an equidigital number, since it uses as much as digits as its factorization.

40740165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11200 (or 11185 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 40740165 is about 6382.8022842636. The cubic root of 40740165 is about 344.0917509228.

Adding to 40740165 its reverse (56104704), we get a palindrome (96844869).

The spelling of 40740165 in words is "forty million, seven hundred forty thousand, one hundred sixty-five".