Search a number
-
+
120120023 = 190762989
BaseRepresentation
bin1110010100011…
…10001011010111
322101000201200202
413022032023113
5221222320043
615530331115
72656001102
oct712161327
9271021622
10120120023
1161893a51
1234289a9b
131bb6974a
1411d4b739
15a82b1b8
hex728e2d7

120120023 has 4 divisors (see below), whose sum is σ = 120184920. Its totient is φ = 120055128.

The previous prime is 120119999. The next prime is 120120031. The reversal of 120120023 is 320021021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320021021 = 794050899.

It is a cyclic number.

It is not a de Polignac number, because 120120023 - 26 = 120119959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120119986 and 120120013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120120073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29588 + ... + 33401.

It is an arithmetic number, because the mean of its divisors is an integer number (30046230).

Almost surely, 2120120023 is an apocalyptic number.

120120023 is a deficient number, since it is larger than the sum of its proper divisors (64897).

120120023 is an equidigital number, since it uses as much as digits as its factorization.

120120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64896.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 120120023 is about 10959.9280563332. The cubic root of 120120023 is about 493.4068057218.

Adding to 120120023 its reverse (320021021), we get a palindrome (440141044).

The spelling of 120120023 in words is "one hundred twenty million, one hundred twenty thousand, twenty-three".

Divisors: 1 1907 62989 120120023