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111442 = 255721
BaseRepresentation
bin11011001101010010
312122212111
4123031102
512031232
62215534
7642622
oct331522
9178774
10111442
1176801
12545aa
133b956
142c882
1523047
hex1b352

111442 has 4 divisors (see below), whose sum is σ = 167166. Its totient is φ = 55720.

The previous prime is 111439. The next prime is 111443. The reversal of 111442 is 244111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58081 + 53361 = 241^2 + 231^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (111443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27859 + ... + 27862.

2111442 is an apocalyptic number.

111442 is a deficient number, since it is larger than the sum of its proper divisors (55724).

111442 is an equidigital number, since it uses as much as digits as its factorization.

111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55723.

The product of its digits is 32, while the sum is 13.

The square root of 111442 is about 333.8292976957. The cubic root of 111442 is about 48.1226608184.

Adding to 111442 its reverse (244111), we get a palindrome (355553).

It can be divided in two parts, 1114 and 42, that added together give a square (1156 = 342).

The spelling of 111442 in words is "one hundred eleven thousand, four hundred forty-two", and thus it is an iban number.

Divisors: 1 2 55721 111442