40502143 has 16 divisors (see below), whose sum is σ = 47589120. Its totient is φ = 34057600.

The previous prime is 40502141. The next prime is 40502159. The reversal of 40502143 is 34120504.

It is a cyclic number.

It is not a de Polignac number, because 40502143 - 2¹ = 40502141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40502143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40502141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9198 + ... + 12868.

It is an arithmetic number, because the mean of its divisors is an integer number (2974320).

Almost surely, 2^40502143 is an apocalyptic number.

40502143 is a deficient number, since it is larger than the sum of its proper divisors (7086977).

40502143 is a wasteful number, since it uses less digits than its factorization.

40502143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40502143 is about 6364.1293984331. The cubic root of 40502143 is about 343.4203297521.

Adding to 40502143 its reverse (34120504), we get a palindrome (74622647).

The spelling of 40502143 in words is "forty million, five hundred two thousand, one hundred forty-three".