Search a number
-
+
120021223 = 7127135007
BaseRepresentation
bin1110010011101…
…10000011100111
322100211201011111
413021312003213
5221211134343
615524245451
72655110050
oct711660347
9270751144
10120021223
11618267a3
1234240887
131bb3379a
1411d23727
15a80bc9d
hex72760e7

120021223 has 8 divisors (see below), whose sum is σ = 138248192. Its totient is φ = 102064536.

The previous prime is 120021211. The next prime is 120021257. The reversal of 120021223 is 322120021.

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

It is not a de Polignac number, because 120021223 - 25 = 120021191 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 (120021263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66615 + ... + 68392.

It is an arithmetic number, because the mean of its divisors is an integer number (17281024).

Almost surely, 2120021223 is an apocalyptic number.

120021223 is a deficient number, since it is larger than the sum of its proper divisors (18226969).

120021223 is a wasteful number, since it uses less digits than its factorization.

120021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135141.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 120021223 is about 10955.4198002632. The cubic root of 120021223 is about 493.2714911625.

Adding to 120021223 its reverse (322120021), we get a palindrome (442141244).

It can be divided in two parts, 12002 and 1223, that added together give a square (13225 = 1152).

The spelling of 120021223 in words is "one hundred twenty million, twenty-one thousand, two hundred twenty-three".

Divisors: 1 7 127 889 135007 945049 17145889 120021223