40382145 has 20 divisors (see below), whose sum is σ = 72389460. Its totient is φ = 21536928.

The previous prime is 40382143. The next prime is 40382149. The reversal of 40382145 is 54128304.

It can be written as a sum of positive squares in 2 ways, for example, as 29942784 + 10439361 = 5472^2 + 3231^2 .

It is not a de Polignac number, because 40382145 - 2¹ = 40382143 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (40382143) 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 19 ways as a sum of consecutive naturals, for example, 49450 + ... + 50259.

It is an arithmetic number, because the mean of its divisors is an integer number (3619473).

Almost surely, 2^40382145 is an apocalyptic number.

40382145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40382145 is a deficient number, since it is larger than the sum of its proper divisors (32007315).

40382145 is an equidigital number, since it uses as much as digits as its factorization.

40382145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99726 (or 99717 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40382145 is about 6354.6947212278. The cubic root of 40382145 is about 343.0808372795.

The spelling of 40382145 in words is "forty million, three hundred eighty-two thousand, one hundred forty-five".