Search a number
-
+
3120143 = 13240011
BaseRepresentation
bin1011111001110000001111
312212112000212
423321300033
51244321033
6150513035
735343425
oct13716017
95775025
103120143
111841234
12106577b
13853250
145b3115
15419748
hex2f9c0f

3120143 has 4 divisors (see below), whose sum is σ = 3360168. Its totient is φ = 2880120.

The previous prime is 3120137. The next prime is 3120217. The reversal of 3120143 is 3410213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3410213 = 8938317.

It is a cyclic number.

It is not a de Polignac number, because 3120143 - 24 = 3120127 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 (3120443) 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, 119993 + ... + 120018.

It is an arithmetic number, because the mean of its divisors is an integer number (840042).

Almost surely, 23120143 is an apocalyptic number.

3120143 is a deficient number, since it is larger than the sum of its proper divisors (240025).

3120143 is a wasteful number, since it uses less digits than its factorization.

3120143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240024.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3120143 is about 1766.3926517057. The cubic root of 3120143 is about 146.1251038799.

Adding to 3120143 its reverse (3410213), we get a palindrome (6530356).

The spelling of 3120143 in words is "three million, one hundred twenty thousand, one hundred forty-three".

Divisors: 1 13 240011 3120143