195120123 has 24 divisors (see below), whose sum is σ = 286743744. Its totient is φ = 117931440.

The previous prime is 195120103. The next prime is 195120143. The reversal of 195120123 is 321021591.

It is an interprime number because it is at equal distance from previous prime (195120103) and next prime (195120143).

It is not a de Polignac number, because 195120123 - 2⁸ = 195119867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195120093 and 195120102.

It is not an unprimeable number, because it can be changed into a prime (195120103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247536 + ... + 248322.

It is an arithmetic number, because the mean of its divisors is an integer number (11947656).

Almost surely, 2^195120123 is an apocalyptic number.

195120123 is a deficient number, since it is larger than the sum of its proper divisors (91623621).

195120123 is a wasteful number, since it uses less digits than its factorization.

195120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 195120123 is about 13968.5404749387. The cubic root of 195120123 is about 580.0080488380.

The spelling of 195120123 in words is "one hundred ninety-five million, one hundred twenty thousand, one hundred twenty-three".