120009823 has 2 divisors, whose sum is σ = 120009824. Its totient is φ = 120009822.

The previous prime is 120009821. The next prime is 120009881. The reversal of 120009823 is 328900021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120009823 - 2¹ = 120009821 is a prime.

Together with 120009821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120009821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60004911 + 60004912.

It is an arithmetic number, because the mean of its divisors is an integer number (60004912).

Almost surely, 2^120009823 is an apocalyptic number.

120009823 is a deficient number, since it is larger than the sum of its proper divisors (1).

120009823 is an equidigital number, since it uses as much as digits as its factorization.

120009823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 120009823 is about 10954.8994974851. The cubic root of 120009823 is about 493.2558731662.

Adding to 120009823 its reverse (328900021), we get a palindrome (448909844).

The spelling of 120009823 in words is "one hundred twenty million, nine thousand, eight hundred twenty-three".