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1072111 = 8312917
BaseRepresentation
bin100000101101111101111
32000110122211
410011233233
5233301421
634551251
712053455
oct4055757
92013584
101072111
11672547
12438527
132b6cb1
141dc9d5
151629e1
hex105bef

1072111 has 4 divisors (see below), whose sum is σ = 1085112. Its totient is φ = 1059112.

The previous prime is 1072103. The next prime is 1072129. The reversal of 1072111 is 1112701.

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

It is a cyclic number.

It is not a de Polignac number, because 1072111 - 23 = 1072103 is a prime.

It is a super-2 number, since 2×10721112 = 2298843992642, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1072091 and 1072100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072711) 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 3 ways as a sum of consecutive naturals, for example, 6376 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (271278).

21072111 is an apocalyptic number.

1072111 is a deficient number, since it is larger than the sum of its proper divisors (13001).

1072111 is an equidigital number, since it uses as much as digits as its factorization.

1072111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 1072111 is about 1035.4279308576. The cubic root of 1072111 is about 102.3481312325.

Adding to 1072111 its reverse (1112701), we get a palindrome (2184812).

The spelling of 1072111 in words is "one million, seventy-two thousand, one hundred eleven".

Divisors: 1 83 12917 1072111