Search a number
-
+
120243203 = 312211593
BaseRepresentation
bin1110010101011…
…00010000000011
322101020222122222
413022230100003
5221240240303
615533121255
72660023163
oct712542003
9271228588
10120243203
1161968553
123432922b
131bbb0832
1411d805a3
15a852938
hex72ac403

120243203 has 12 divisors (see below), whose sum is σ = 125046504. Its totient is φ = 115617600.

The previous prime is 120243169. The next prime is 120243217. The reversal of 120243203 is 302342021.

It is a de Polignac number, because none of the positive numbers 2k-120243203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120243223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202475 + ... + 203067.

It is an arithmetic number, because the mean of its divisors is an integer number (10420542).

Almost surely, 2120243203 is an apocalyptic number.

120243203 is a deficient number, since it is larger than the sum of its proper divisors (4803301).

120243203 is an equidigital number, since it uses as much as digits as its factorization.

120243203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 120243203 is about 10965.5461788276. The cubic root of 120243203 is about 493.5754067740.

Adding to 120243203 its reverse (302342021), we get a palindrome (422585224).

The spelling of 120243203 in words is "one hundred twenty million, two hundred forty-three thousand, two hundred three".

Divisors: 1 31 211 593 961 6541 18383 125123 202771 569873 3878813 120243203