111147642 has 12 divisors (see below), whose sum is σ = 240819930. Its totient is φ = 37049208.

The previous prime is 111147637. The next prime is 111147643. The reversal of 111147642 is 246741111.

111147642 is a `hidden beast` number, since 1 + 1 + 1 + 14 + 7 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 103245921 + 7901721 = 10161^2 + 2811^2 .

It is not an unprimeable number, because it can be changed into a prime (111147643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3087417 + ... + 3087452.

Almost surely, 2^111147642 is an apocalyptic number.

111147642 is an abundant number, since it is smaller than the sum of its proper divisors (129672288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111147642 is a wasteful number, since it uses less digits than its factorization.

111147642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174877 (or 6174874 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 111147642 is about 10542.6582036980. The cubic root of 111147642 is about 480.8025376549.

Adding to 111147642 its reverse (246741111), we get a palindrome (357888753).

The spelling of 111147642 in words is "one hundred eleven million, one hundred forty-seven thousand, six hundred forty-two".