123984906740 has 24 divisors (see below), whose sum is σ = 263934996360. Its totient is φ = 48914592768.

The previous prime is 123984906649. The next prime is 123984906761. The reversal of 123984906740 is 47609489321.

It can be written as a sum of positive squares in 4 ways, for example, as 33009075856 + 90975830884 = 181684^2 + 301622^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42459125 + ... + 42462044.

It is an arithmetic number, because the mean of its divisors is an integer number (10997291515).

Almost surely, 2^123984906740 is an apocalyptic number.

123984906740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123984906740 is an abundant number, since it is smaller than the sum of its proper divisors (139950089620).

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

123984906740 is a wasteful number, since it uses less digits than its factorization.

123984906740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84921251 (or 84921249 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 123984906740 in words is "one hundred twenty-three billion, nine hundred eighty-four million, nine hundred six thousand, seven hundred forty".