30120123005 has 16 divisors (see below), whose sum is σ = 41403016704. Its totient is φ = 20606088960.

The previous prime is 30120122983. The next prime is 30120123017. The reversal of 30120123005 is 50032102103.

It is not a de Polignac number, because 30120123005 - 2⁸ = 30120122749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978581 + ... + 1008890.

It is an arithmetic number, because the mean of its divisors is an integer number (2587688544).

Almost surely, 2^30120123005 is an apocalyptic number.

30120123005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30120123005 is a deficient number, since it is larger than the sum of its proper divisors (11282893699).

30120123005 is a wasteful number, since it uses less digits than its factorization.

30120123005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987916.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 30120123005 its reverse (50032102103), we get a palindrome (80152225108).

The spelling of 30120123005 in words is "thirty billion, one hundred twenty million, one hundred twenty-three thousand, five".