111429 has 8 divisors (see below), whose sum is σ = 165120. Its totient is φ = 74268.

The previous prime is 111427. The next prime is 111431. The reversal of 111429 is 924111.

It is an interprime number because it is at equal distance from previous prime (111427) and next prime (111431).

It is not a de Polignac number, because 111429 - 2¹ = 111427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111427) 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, 2037 + ... + 2090.

It is an arithmetic number, because the mean of its divisors is an integer number (20640).

2¹¹¹⁴²⁹ is an apocalyptic number.

It is an amenable number.

111429 is a deficient number, since it is larger than the sum of its proper divisors (53691).

111429 is an equidigital number, since it uses as much as digits as its factorization.

111429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136 (or 4130 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 111429 is about 333.8098260986. The cubic root of 111429 is about 48.1207895344.

The spelling of 111429 in words is "one hundred eleven thousand, four hundred twenty-nine".