40200111 has 32 divisors (see below), whose sum is σ = 68436480. Its totient is φ = 22845888.

The previous prime is 40200109. The next prime is 40200133. The reversal of 40200111 is 11100204.

It is a happy number.

It is not a de Polignac number, because 40200111 - 2¹ = 40200109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 40200093 and 40200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40200161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42435 + ... + 43371.

It is an arithmetic number, because the mean of its divisors is an integer number (2138640).

Almost surely, 2^40200111 is an apocalyptic number.

40200111 is a deficient number, since it is larger than the sum of its proper divisors (28236369).

40200111 is a wasteful number, since it uses less digits than its factorization.

40200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 40200111 is about 6340.3557471170. The cubic root of 40200111 is about 342.5645492562.

Adding to 40200111 its reverse (11100204), we get a palindrome (51300315).

The spelling of 40200111 in words is "forty million, two hundred thousand, one hundred eleven".