40234145 has 24 divisors (see below), whose sum is σ = 56776104. Its totient is φ = 27288576.

The previous prime is 40234127. The next prime is 40234151. The reversal of 40234145 is 54143204.

40234145 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 4 ways, for example, as 2202256 + 38031889 = 1484^2 + 6167^2 .

It is not a de Polignac number, because 40234145 - 2⁶ = 40234081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40234145.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22919 + ... + 24611.

It is an arithmetic number, because the mean of its divisors is an integer number (2365671).

Almost surely, 2^40234145 is an apocalyptic number.

It is an amenable number.

40234145 is a deficient number, since it is larger than the sum of its proper divisors (16541959).

40234145 is a wasteful number, since it uses less digits than its factorization.

40234145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809 (or 1802 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40234145 is about 6343.0390980980. The cubic root of 40234145 is about 342.6611953677.

Adding to 40234145 its reverse (54143204), we get a palindrome (94377349).

The spelling of 40234145 in words is "forty million, two hundred thirty-four thousand, one hundred forty-five".