140111111 has 8 divisors (see below), whose sum is σ = 168554880. Its totient is φ = 113774328.

The previous prime is 140111087. The next prime is 140111117. The reversal of 140111111 is 111111041.

It is a happy number.

140111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140111111 is a prime.

It is a super-2 number, since 2×140111111² = 39262246851308642, which contains 22 as substring.

It is a Duffinian number.

140111111 is a modest number, since divided by 11111 gives 1401 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 140111092 and 140111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140111117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526601 + ... + 526866.

It is an arithmetic number, because the mean of its divisors is an integer number (21069360).

Almost surely, 2^140111111 is an apocalyptic number.

140111111 is a deficient number, since it is larger than the sum of its proper divisors (28443769).

140111111 is a wasteful number, since it uses less digits than its factorization.

140111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053493.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 140111111 is about 11836.8539316830. The cubic root of 140111111 is about 519.3867412920.

Adding to 140111111 its reverse (111111041), we get a palindrome (251222152).

The spelling of 140111111 in words is "one hundred forty million, one hundred eleven thousand, one hundred eleven".