140434111 has 4 divisors (see below), whose sum is σ = 147825400. Its totient is φ = 133042824.

The previous prime is 140434109. The next prime is 140434121. The reversal of 140434111 is 111434041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111434041 = 523 ⋅213067.

It is a cyclic number.

It is not a de Polignac number, because 140434111 - 2¹ = 140434109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 7391269 = 140434111 / (1 + 4 + 0 + 4 + 3 + 4 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140434121) 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, 3695616 + ... + 3695653.

It is an arithmetic number, because the mean of its divisors is an integer number (36956350).

Almost surely, 2^140434111 is an apocalyptic number.

140434111 is a deficient number, since it is larger than the sum of its proper divisors (7391289).

140434111 is an equidigital number, since it uses as much as digits as its factorization.

140434111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391288.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 140434111 is about 11850.4899054849. The cubic root of 140434111 is about 519.7855513662.

Adding to 140434111 its reverse (111434041), we get a palindrome (251868152).

The spelling of 140434111 in words is "one hundred forty million, four hundred thirty-four thousand, one hundred eleven".