111642436 has 12 divisors (see below), whose sum is σ = 196504812. Its totient is φ = 55498208.

The previous prime is 111642407. The next prime is 111642457. The reversal of 111642436 is 634246111.

It can be written as a sum of positive squares in 2 ways, for example, as 62726400 + 48916036 = 7920^2 + 6994^2 .

It is a super-3 number, since 3×111642436³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 79975 + ... + 81358.

It is an arithmetic number, because the mean of its divisors is an integer number (16375401).

Almost surely, 2^111642436 is an apocalyptic number.

It is an amenable number.

111642436 is a deficient number, since it is larger than the sum of its proper divisors (84862376).

111642436 is a wasteful number, since it uses less digits than its factorization.

111642436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161510 (or 161508 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 111642436 is about 10566.0984284645. The cubic root of 111642436 is about 481.5149416288.

Adding to 111642436 its reverse (634246111), we get a palindrome (745888547).

The spelling of 111642436 in words is "one hundred eleven million, six hundred forty-two thousand, four hundred thirty-six".