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12075901 = 110910889
BaseRepresentation
bin101110000100…
…001101111101
3211201112000121
4232010031331
511042412101
61110454541
7204433465
oct56041575
924645017
1012075901
1168a8892
124064451
13266a706
141864ba5
1510d80a1
hexb8437d

12075901 has 4 divisors (see below), whose sum is σ = 12087900. Its totient is φ = 12063904.

The previous prime is 12075881. The next prime is 12075907. The reversal of 12075901 is 10957021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10957021 = 74314747.

It can be written as a sum of positive squares in 2 ways, for example, as 276676 + 11799225 = 526^2 + 3435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12075901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12075907) 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, 4336 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (3021975).

Almost surely, 212075901 is an apocalyptic number.

It is an amenable number.

12075901 is a deficient number, since it is larger than the sum of its proper divisors (11999).

12075901 is a wasteful number, since it uses less digits than its factorization.

12075901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11998.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 12075901 is about 3475.0397120033. The cubic root of 12075901 is about 229.4245285766.

The spelling of 12075901 in words is "twelve million, seventy-five thousand, nine hundred one".

Divisors: 1 1109 10889 12075901