111642801 has 16 divisors (see below), whose sum is σ = 153489600. Its totient is φ = 72128448.

The previous prime is 111642799. The next prime is 111642821. The reversal of 111642801 is 108246111.

It is not a de Polignac number, because 111642801 - 2¹ = 111642799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111642821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27990 + ... + 31728.

It is an arithmetic number, because the mean of its divisors is an integer number (9593100).

Almost surely, 2^111642801 is an apocalyptic number.

It is an amenable number.

111642801 is a deficient number, since it is larger than the sum of its proper divisors (41846799).

111642801 is a wasteful number, since it uses less digits than its factorization.

111642801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 111642801 is about 10566.1157006726. The cubic root of 111642801 is about 481.5154663778.

Adding to 111642801 its reverse (108246111), we get a palindrome (219888912).

The spelling of 111642801 in words is "one hundred eleven million, six hundred forty-two thousand, eight hundred one".