123030012043 has 4 divisors (see below), whose sum is σ = 123034974160. Its totient is φ = 123025049928.

The previous prime is 123030012013. The next prime is 123030012059. The reversal of 123030012043 is 340210030321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340210030321 = 7 ⋅48601432903.

It is a cyclic number.

It is not a de Polignac number, because 123030012043 - 2¹⁷ = 123029880971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123030012043.

It is not an unprimeable number, because it can be changed into a prime (123030012013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443680 + ... + 2493517.

It is an arithmetic number, because the mean of its divisors is an integer number (30758743540).

Almost surely, 2^123030012043 is an apocalyptic number.

123030012043 is a deficient number, since it is larger than the sum of its proper divisors (4962117).

123030012043 is an equidigital number, since it uses as much as digits as its factorization.

123030012043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4962116.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 123030012043 its reverse (340210030321), we get a palindrome (463240042364).

The spelling of 123030012043 in words is "one hundred twenty-three billion, thirty million, twelve thousand, forty-three".