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120104023 = 139238771
BaseRepresentation
bin1110010100010…
…10010001010111
322100222220202011
413022022101113
5221221312043
615530125051
72655603334
oct712122127
9270886664
10120104023
1161882a26
1234280787
131bb62390
1411d4598b
15a82659d
hex728a457

120104023 has 4 divisors (see below), whose sum is σ = 129342808. Its totient is φ = 110865240.

The previous prime is 120104021. The next prime is 120104063. The reversal of 120104023 is 320401021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120104023 - 21 = 120104021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 9238771 = 120104023 / (1 + 2 + 0 + 1 + 0 + 4 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120103994 and 120104012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120104021) 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, 4619373 + ... + 4619398.

It is an arithmetic number, because the mean of its divisors is an integer number (32335702).

Almost surely, 2120104023 is an apocalyptic number.

120104023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120104023 is a deficient number, since it is larger than the sum of its proper divisors (9238785).

120104023 is an equidigital number, since it uses as much as digits as its factorization.

120104023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238784.

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

The square root of 120104023 is about 10959.1981002261. The cubic root of 120104023 is about 493.3848974692.

Adding to 120104023 its reverse (320401021), we get a palindrome (440505044).

The spelling of 120104023 in words is "one hundred twenty million, one hundred four thousand, twenty-three".

Divisors: 1 13 9238771 120104023