40111143 has 16 divisors (see below), whose sum is σ = 57270240. Its totient is φ = 24882176.

The previous prime is 40111139. The next prime is 40111151. The reversal of 40111143 is 34111104.

It is a cyclic number.

It is not a de Polignac number, because 40111143 - 2² = 40111139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40111133) 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, 121 + ... + 8957.

It is an arithmetic number, because the mean of its divisors is an integer number (3579390).

Almost surely, 2^40111143 is an apocalyptic number.

40111143 is a deficient number, since it is larger than the sum of its proper divisors (17159097).

40111143 is a wasteful number, since it uses less digits than its factorization.

40111143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8946.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 40111143 is about 6333.3358508767. The cubic root of 40111143 is about 342.3116495077.

Adding to 40111143 its reverse (34111104), we get a palindrome (74222247).

The spelling of 40111143 in words is "forty million, one hundred eleven thousand, one hundred forty-three".