30000123145 has 16 divisors (see below), whose sum is σ = 37254634560. Its totient is φ = 23164356544.

The previous prime is 30000123119. The next prime is 30000123149. The reversal of 30000123145 is 54132100003.

It is a cyclic number.

It is not a de Polignac number, because 30000123145 - 2⁵ = 30000123113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30000123149) 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 15 ways as a sum of consecutive naturals, for example, 394722 + ... + 464548.

It is an arithmetic number, because the mean of its divisors is an integer number (2328414660).

Almost surely, 2^30000123145 is an apocalyptic number.

It is an amenable number.

30000123145 is a deficient number, since it is larger than the sum of its proper divisors (7254511415).

30000123145 is a wasteful number, since it uses less digits than its factorization.

30000123145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72824.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 30000123145 its reverse (54132100003), we get a palindrome (84132223148).

The spelling of 30000123145 in words is "thirty billion, one hundred twenty-three thousand, one hundred forty-five".