40043143 has 24 divisors (see below), whose sum is σ = 50306832. Its totient is φ = 31659264.

The previous prime is 40043141. The next prime is 40043149. The reversal of 40043143 is 34134004.

40043143 = 7³ + 8³ + ... + 112³.

It is not a de Polignac number, because 40043143 - 2¹ = 40043141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40043143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43696 + ... + 44602.

It is an arithmetic number, because the mean of its divisors is an integer number (2096118).

Almost surely, 2^40043143 is an apocalyptic number.

40043143 is a deficient number, since it is larger than the sum of its proper divisors (10263689).

40043143 is a wasteful number, since it uses less digits than its factorization.

40043143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40043143 is about 6327.9651547713. The cubic root of 40043143 is about 342.1181009766.

Adding to 40043143 its reverse (34134004), we get a palindrome (74177147).

It can be divided in two parts, 40043 and 143, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 40043143 in words is "forty million, forty-three thousand, one hundred forty-three".