111406 has 8 divisors (see below), whose sum is σ = 170424. Its totient is φ = 54600.

The previous prime is 111373. The next prime is 111409. The reversal of 111406 is 604111.

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

It is a super-2 number, since 2×111406² = 24822593672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111409) 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, 420 + ... + 631.

It is an arithmetic number, because the mean of its divisors is an integer number (21303).

2¹¹¹⁴⁰⁶ is an apocalyptic number.

111406 is a deficient number, since it is larger than the sum of its proper divisors (59018).

111406 is a wasteful number, since it uses less digits than its factorization.

111406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 111406 is about 333.7753735673. The cubic root of 111406 is about 48.1174784444.

Adding to 111406 its reverse (604111), we get a palindrome (715517).

The spelling of 111406 in words is "one hundred eleven thousand, four hundred six".