40235143 has 16 divisors (see below), whose sum is σ = 44706816. Its totient is φ = 35975520.

The previous prime is 40235123. The next prime is 40235159. The reversal of 40235143 is 34153204.

40235143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40235143 - 2¹³ = 40226951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40235123) 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 15 ways as a sum of consecutive naturals, for example, 93138 + ... + 93568.

It is an arithmetic number, because the mean of its divisors is an integer number (2794176).

Almost surely, 2^40235143 is an apocalyptic number.

40235143 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40235143 is a deficient number, since it is larger than the sum of its proper divisors (4471673).

40235143 is a wasteful number, since it uses less digits than its factorization.

40235143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40235143 is about 6343.1177665246. The cubic root of 40235143 is about 342.6640285586.

Adding to 40235143 its reverse (34153204), we get a palindrome (74388347).

The spelling of 40235143 in words is "forty million, two hundred thirty-five thousand, one hundred forty-three".