40442111 has 2 divisors, whose sum is σ = 40442112. Its totient is φ = 40442110.

The previous prime is 40442063. The next prime is 40442123. The reversal of 40442111 is 11124404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40442111 - 2¹⁴ = 40425727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40442111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40442131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20221055 + 20221056.

It is an arithmetic number, because the mean of its divisors is an integer number (20221056).

Almost surely, 2^40442111 is an apocalyptic number.

40442111 is a deficient number, since it is larger than the sum of its proper divisors (1).

40442111 is an equidigital number, since it uses as much as digits as its factorization.

40442111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40442111 is about 6359.4112148846. The cubic root of 40442111 is about 343.2505740977.

Adding to 40442111 its reverse (11124404), we get a palindrome (51566515).

The spelling of 40442111 in words is "forty million, four hundred forty-two thousand, one hundred eleven".