111142545 has 16 divisors (see below), whose sum is σ = 181612800. Its totient is φ = 58014464.

The previous prime is 111142511. The next prime is 111142547. The reversal of 111142545 is 545241111.

It is a cyclic number.

It is not a de Polignac number, because 111142545 - 2⁹ = 111142033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111142547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78120 + ... + 79529.

It is an arithmetic number, because the mean of its divisors is an integer number (11350800).

Almost surely, 2^111142545 is an apocalyptic number.

111142545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111142545 is a deficient number, since it is larger than the sum of its proper divisors (70470255).

111142545 is a wasteful number, since it uses less digits than its factorization.

111142545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157704.

The product of its digits is 800, while the sum is 24.

The square root of 111142545 is about 10542.4164687229. The cubic root of 111142545 is about 480.7951880073.

Adding to 111142545 its reverse (545241111), we get a palindrome (656383656).

The spelling of 111142545 in words is "one hundred eleven million, one hundred forty-two thousand, five hundred forty-five".