111406143 has 16 divisors (see below), whose sum is σ = 152522496. Its totient is φ = 72288960.

The previous prime is 111406133. The next prime is 111406189. The reversal of 111406143 is 341604111.

It is not a de Polignac number, because 111406143 - 2⁵ = 111406111 is a prime.

It is a super-2 number, since 2×111406143² = 24822657396272898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111406133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71430 + ... + 72972.

It is an arithmetic number, because the mean of its divisors is an integer number (9532656).

Almost surely, 2^111406143 is an apocalyptic number.

111406143 is a deficient number, since it is larger than the sum of its proper divisors (41116353).

111406143 is a wasteful number, since it uses less digits than its factorization.

111406143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 111406143 is about 10554.9108475629. The cubic root of 111406143 is about 481.1749903220.

The spelling of 111406143 in words is "one hundred eleven million, four hundred six thousand, one hundred forty-three".