Search a number
-
+
12705602142 = 232117600357
BaseRepresentation
bin10111101010101000…
…00001101001011110
31012210110211110112010
423311110001221132
5202010113232032
65500433052050
7626566556562
oct136524015136
935713743463
1012705602142
11542aa87a42
1225670b7026
1312763b5a9c
148876136a2
154e569cccc
hex2f5501a5e

12705602142 has 8 divisors (see below), whose sum is σ = 25411204296. Its totient is φ = 4235200712.

The previous prime is 12705602131. The next prime is 12705602149. The reversal of 12705602142 is 24120650721.

12705602142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

12705602142 is an admirable number.

It is a super-2 number, since 2×127056021422 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705602149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058800173 + ... + 1058800184.

It is an arithmetic number, because the mean of its divisors is an integer number (3176400537).

Almost surely, 212705602142 is an apocalyptic number.

12705602142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12705602142 is a wasteful number, since it uses less digits than its factorization.

12705602142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117600362.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 12705602142 in words is "twelve billion, seven hundred five million, six hundred two thousand, one hundred forty-two".

Divisors: 1 2 3 6 2117600357 4235200714 6352801071 12705602142