40102111 has 4 divisors (see below), whose sum is σ = 45830992. Its totient is φ = 34373232.

The previous prime is 40102109. The next prime is 40102147. The reversal of 40102111 is 11120104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40102111 - 2¹ = 40102109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40102171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2864430 + ... + 2864443.

It is an arithmetic number, because the mean of its divisors is an integer number (11457748).

Almost surely, 2^40102111 is an apocalyptic number.

40102111 is a deficient number, since it is larger than the sum of its proper divisors (5728881).

40102111 is an equidigital number, since it uses as much as digits as its factorization.

40102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728880.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 40102111 is about 6332.6227583838. The cubic root of 40102111 is about 342.2859543128.

Adding to 40102111 its reverse (11120104), we get a palindrome (51222215).

The spelling of 40102111 in words is "forty million, one hundred two thousand, one hundred eleven".