123012030009 has 32 divisors (see below), whose sum is σ = 179313062400. Its totient is φ = 74391926400.

The previous prime is 123012029977. The next prime is 123012030061. The reversal of 123012030009 is 900030210321.

It is a happy number.

It is not a de Polignac number, because 123012030009 - 2⁵ = 123012029977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123012030109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40343517 + ... + 40346565.

It is an arithmetic number, because the mean of its divisors is an integer number (5603533200).

Almost surely, 2^123012030009 is an apocalyptic number.

It is an amenable number.

123012030009 is a deficient number, since it is larger than the sum of its proper divisors (56301032391).

123012030009 is a wasteful number, since it uses less digits than its factorization.

123012030009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301.

The product of its (nonzero) digits is 324, while the sum is 21.

The spelling of 123012030009 in words is "one hundred twenty-three billion, twelve million, thirty thousand, nine".