30120123006 has 48 divisors (see below), whose sum is σ = 65723793408. Its totient is φ = 9968864400.

The previous prime is 30120122983. The next prime is 30120123017. The reversal of 30120123006 is 60032102103.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 30120123006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2973891 + ... + 2984001.

It is an arithmetic number, because the mean of its divisors is an integer number (1369245696).

Almost surely, 2^30120123006 is an apocalyptic number.

30120123006 is an abundant number, since it is smaller than the sum of its proper divisors (35603670402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30120123006 is a wasteful number, since it uses less digits than its factorization.

30120123006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277 (or 11274 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30120123006 its reverse (60032102103), we get a palindrome (90152225109).

The spelling of 30120123006 in words is "thirty billion, one hundred twenty million, one hundred twenty-three thousand, six".