123755 has 8 divisors (see below), whose sum is σ = 151632. Its totient is φ = 96928.

The previous prime is 123737. The next prime is 123757. The reversal of 123755 is 557321.

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

It is a cyclic number.

It is not a de Polignac number, because 123755 - 2⁸ = 123499 is a prime.

It is a Duffinian number.

Its product of digits (1050) is a multiple of the sum of its prime divisors (525).

It is a self number, because there is not a number n which added to its sum of digits gives 123755.

It is not an unprimeable number, because it can be changed into a prime (123757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32 + ... + 498.

It is an arithmetic number, because the mean of its divisors is an integer number (18954).

2¹²³⁷⁵⁵ is an apocalyptic number.

123755 is a deficient number, since it is larger than the sum of its proper divisors (27877).

123755 is an equidigital number, since it uses as much as digits as its factorization.

123755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its digits is 1050, while the sum is 23.

The square root of 123755 is about 351.7882886055. The cubic root of 123755 is about 49.8334458101.

It can be divided in two parts, 123 and 755, that added together give a palindrome (878).

The spelling of 123755 in words is "one hundred twenty-three thousand, seven hundred fifty-five".