123084128938 has 8 divisors (see below), whose sum is σ = 188554410432. Its totient is φ = 60232658796.

The previous prime is 123084128933. The next prime is 123084129023. The reversal of 123084128938 is 839821480321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 123084128891 and 123084128900.

It is not an unprimeable number, because it can be changed into a prime (123084128933) 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, 654702720 + ... + 654702907.

It is an arithmetic number, because the mean of its divisors is an integer number (23569301304).

Almost surely, 2^123084128938 is an apocalyptic number.

123084128938 is a deficient number, since it is larger than the sum of its proper divisors (65470281494).

123084128938 is a wasteful number, since it uses less digits than its factorization.

123084128938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309405676.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 123084128938 in words is "one hundred twenty-three billion, eighty-four million, one hundred twenty-eight thousand, nine hundred thirty-eight".