123863755 has 32 divisors (see below), whose sum is σ = 163215360. Its totient is φ = 89890560.

The previous prime is 123863749. The next prime is 123863767. The reversal of 123863755 is 557368321.

It is not a de Polignac number, because 123863755 - 2⁷ = 123863627 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403312 + ... + 403618.

It is an arithmetic number, because the mean of its divisors is an integer number (5100480).

Almost surely, 2^123863755 is an apocalyptic number.

123863755 is a deficient number, since it is larger than the sum of its proper divisors (39351605).

123863755 is a wasteful number, since it uses less digits than its factorization.

123863755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its digits is 151200, while the sum is 40.

The square root of 123863755 is about 11129.4094632195. The cubic root of 123863755 is about 498.4803929342.

The spelling of 123863755 in words is "one hundred twenty-three million, eight hundred sixty-three thousand, seven hundred fifty-five".