40111071 has 96 divisors (see below), whose sum is σ = 77833728. Its totient is φ = 17729280.

The previous prime is 40111067. The next prime is 40111073. The reversal of 40111071 is 17011104.

It is not a de Polignac number, because 40111071 - 2² = 40111067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40111071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40111073) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1084065 + ... + 1084101.

It is an arithmetic number, because the mean of its divisors is an integer number (810768).

Almost surely, 2^40111071 is an apocalyptic number.

40111071 is a deficient number, since it is larger than the sum of its proper divisors (37722657).

40111071 is a wasteful number, since it uses less digits than its factorization.

40111071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 40111071 is about 6333.3301666659. The cubic root of 40111071 is about 342.3114446897.

Adding to 40111071 its reverse (17011104), we get a palindrome (57122175).

It can be divided in two parts, 40 and 111071, that added together give a palindrome (111111).

The spelling of 40111071 in words is "forty million, one hundred eleven thousand, seventy-one".