123988738 has 8 divisors (see below), whose sum is σ = 186114960. Its totient is φ = 61950420.

The previous prime is 123988673. The next prime is 123988763. The reversal of 123988738 is 837889321.

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 = 123988691 and 123988700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18328 + ... + 24163.

It is an arithmetic number, because the mean of its divisors is an integer number (23264370).

Almost surely, 2^123988738 is an apocalyptic number.

123988738 is a deficient number, since it is larger than the sum of its proper divisors (62126222).

123988738 is a wasteful number, since it uses less digits than its factorization.

123988738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43952.

The product of its digits is 580608, while the sum is 49.

The square root of 123988738 is about 11135.0230354499. The cubic root of 123988738 is about 498.6479981437.

The spelling of 123988738 in words is "one hundred twenty-three million, nine hundred eighty-eight thousand, seven hundred thirty-eight".