111442623 has 8 divisors (see below), whose sum is σ = 151393968. Its totient is φ = 72893184.

The previous prime is 111442609. The next prime is 111442673. The reversal of 111442623 is 326244111.

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

It is not a de Polignac number, because 111442623 - 2⁶ = 111442559 is a prime.

It is a super-2 number, since 2×111442623² = 24838916442240258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111442593 and 111442602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111442673) 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 7 ways as a sum of consecutive naturals, for example, 350290 + ... + 350607.

It is an arithmetic number, because the mean of its divisors is an integer number (18924246).

Almost surely, 2^111442623 is an apocalyptic number.

111442623 is a deficient number, since it is larger than the sum of its proper divisors (39951345).

111442623 is an equidigital number, since it uses as much as digits as its factorization.

111442623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700953.

The product of its digits is 1152, while the sum is 24.

The square root of 111442623 is about 10556.6388116673. The cubic root of 111442623 is about 481.2275049248.

Adding to 111442623 its reverse (326244111), we get a palindrome (437686734).

The spelling of 111442623 in words is "one hundred eleven million, four hundred forty-two thousand, six hundred twenty-three".