123788705 has 12 divisors (see below), whose sum is σ = 156778452. Its totient is φ = 93817440.

The previous prime is 123788699. The next prime is 123788719. The reversal of 123788705 is 507887321.

It can be written as a sum of positive squares in 2 ways, for example, as 36048016 + 87740689 = 6004^2 + 9367^2 .

It is not a de Polignac number, because 123788705 - 2⁶ = 123788641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32486 + ... + 36095.

It is an arithmetic number, because the mean of its divisors is an integer number (13064871).

Almost surely, 2^123788705 is an apocalyptic number.

It is an amenable number.

123788705 is a deficient number, since it is larger than the sum of its proper divisors (32989747).

123788705 is an equidigital number, since it uses as much as digits as its factorization.

123788705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68624 (or 68605 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 123788705 is about 11126.0372550158. The cubic root of 123788705 is about 498.3796948946.

The spelling of 123788705 in words is "one hundred twenty-three million, seven hundred eighty-eight thousand, seven hundred five".