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12921301 = 13992959
BaseRepresentation
bin110001010010…
…100111010101
3220022110200201
4301102213111
511301440201
61140540501
7214554301
oct61224725
926273621
1012921301
117325a68
1243b1731
1328a5453
141a04d01
151203801
hexc529d5

12921301 has 4 divisors (see below), whose sum is σ = 13014400. Its totient is φ = 12828204.

The previous prime is 12921299. The next prime is 12921329. The reversal of 12921301 is 10312921.

12921301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10312921 = 20175113.

It is a cyclic number.

It is not a de Polignac number, because 12921301 - 21 = 12921299 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 (12921001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46341 + ... + 46618.

It is an arithmetic number, because the mean of its divisors is an integer number (3253600).

Almost surely, 212921301 is an apocalyptic number.

It is an amenable number.

12921301 is a deficient number, since it is larger than the sum of its proper divisors (93099).

12921301 is an equidigital number, since it uses as much as digits as its factorization.

12921301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93098.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12921301 is about 3594.6211205077. The cubic root of 12921301 is about 234.6580268194.

The spelling of 12921301 in words is "twelve million, nine hundred twenty-one thousand, three hundred one".

Divisors: 1 139 92959 12921301