123984738 has 48 divisors (see below), whose sum is σ = 281657376. Its totient is φ = 39372480.

The previous prime is 123984737. The next prime is 123984739. The reversal of 123984738 is 837489321.

It is an interprime number because it is at equal distance from previous prime (123984737) and next prime (123984739).

It is a junction number, because it is equal to n+sod(n) for n = 123984693 and 123984702.

It is not an unprimeable number, because it can be changed into a prime (123984737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29781 + ... + 33687.

It is an arithmetic number, because the mean of its divisors is an integer number (5867862).

Almost surely, 2^123984738 is an apocalyptic number.

123984738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

123984738 is an abundant number, since it is smaller than the sum of its proper divisors (157672638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123984738 is a wasteful number, since it uses less digits than its factorization.

123984738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999 (or 3996 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 123984738 is about 11134.8434205426. The cubic root of 123984738 is about 498.6426357926.

The spelling of 123984738 in words is "one hundred twenty-three million, nine hundred eighty-four thousand, seven hundred thirty-eight".