120005155023 has 16 divisors (see below), whose sum is σ = 177873647616. Its totient is φ = 71467089120.

The previous prime is 120005155019. The next prime is 120005155043. The reversal of 120005155023 is 320551500021.

It is a happy number.

It is not a de Polignac number, because 120005155023 - 2² = 120005155019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120005154984 and 120005155002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120005155013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49628715 + ... + 49631132.

It is an arithmetic number, because the mean of its divisors is an integer number (11117102976).

Almost surely, 2^120005155023 is an apocalyptic number.

120005155023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120005155023 is a deficient number, since it is larger than the sum of its proper divisors (57868492593).

120005155023 is a wasteful number, since it uses less digits than its factorization.

120005155023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99259894.

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 120005155023 its reverse (320551500021), we get a palindrome (440556655044).

The spelling of 120005155023 in words is "one hundred twenty billion, five million, one hundred fifty-five thousand, twenty-three".