Search a number
-
+
12956942 = 26478471
BaseRepresentation
bin110001011011…
…010100001110
3220101021120202
4301123110032
511304110232
61141413502
7215063225
oct61332416
926337522
1012956942
11734a819
12440a292
1328b873b
141a13cbc
15120e162
hexc5b50e

12956942 has 4 divisors (see below), whose sum is σ = 19435416. Its totient is φ = 6478470.

The previous prime is 12956927. The next prime is 12956947. The reversal of 12956942 is 24965921.

12956942 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 an emirpimes, since its reverse is a distinct semiprime: 24965921 = 137182233.

It is a junction number, because it is equal to n+sod(n) for n = 12956896 and 12956905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12956947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239234 + ... + 3239237.

It is an arithmetic number, because the mean of its divisors is an integer number (4858854).

Almost surely, 212956942 is an apocalyptic number.

12956942 is a deficient number, since it is larger than the sum of its proper divisors (6478474).

12956942 is an equidigital number, since it uses as much as digits as its factorization.

12956942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478473.

The product of its digits is 38880, while the sum is 38.

The square root of 12956942 is about 3599.5752527208. The cubic root of 12956942 is about 234.8735822248.

The spelling of 12956942 in words is "twelve million, nine hundred fifty-six thousand, nine hundred forty-two".

Divisors: 1 2 6478471 12956942