111142155 has 8 divisors (see below), whose sum is σ = 177827472. Its totient is φ = 59275808.

The previous prime is 111142133. The next prime is 111142217. The reversal of 111142155 is 551241111.

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 111142155 - 2⁹ = 111141643 is a prime.

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, 3704724 + ... + 3704753.

It is an arithmetic number, because the mean of its divisors is an integer number (22228434).

Almost surely, 2^111142155 is an apocalyptic number.

111142155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111142155 is a deficient number, since it is larger than the sum of its proper divisors (66685317).

111142155 is an equidigital number, since it uses as much as digits as its factorization.

111142155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409485.

The product of its digits is 200, while the sum is 21.

The square root of 111142155 is about 10542.3979719986. The cubic root of 111142155 is about 480.7946256354.

Adding to 111142155 its reverse (551241111), we get a palindrome (662383266).

The spelling of 111142155 in words is "one hundred eleven million, one hundred forty-two thousand, one hundred fifty-five".