111642745 has 8 divisors (see below), whose sum is σ = 134030016. Its totient is φ = 89275056.

The previous prime is 111642737. The next prime is 111642761. The reversal of 111642745 is 547246111.

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

It is a cyclic number.

It is not a de Polignac number, because 111642745 - 2³ = 111642737 is a prime.

It is a super-2 number, since 2×111642745² = 24928205022270050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15034 + ... + 21196.

It is an arithmetic number, because the mean of its divisors is an integer number (16753752).

Almost surely, 2^111642745 is an apocalyptic number.

It is an amenable number.

111642745 is a deficient number, since it is larger than the sum of its proper divisors (22387271).

111642745 is an equidigital number, since it uses as much as digits as its factorization.

111642745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9791.

The product of its digits is 6720, while the sum is 31.

The square root of 111642745 is about 10566.1130506918. The cubic root of 111642745 is about 481.5153858684.

Adding to 111642745 its reverse (547246111), we get a palindrome (658888856).

The spelling of 111642745 in words is "one hundred eleven million, six hundred forty-two thousand, seven hundred forty-five".