123944855 has 4 divisors (see below), whose sum is σ = 148733832. Its totient is φ = 99155880.

The previous prime is 123944839. The next prime is 123944867. The reversal of 123944855 is 558449321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123944855 - 2⁴ = 123944839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12394481 + ... + 12394490.

It is an arithmetic number, because the mean of its divisors is an integer number (37183458).

Almost surely, 2^123944855 is an apocalyptic number.

123944855 is a deficient number, since it is larger than the sum of its proper divisors (24788977).

123944855 is an equidigital number, since it uses as much as digits as its factorization.

123944855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24788976.

The product of its digits is 172800, while the sum is 41.

The square root of 123944855 is about 11133.0523667142. The cubic root of 123944855 is about 498.5891628212.

The spelling of 123944855 in words is "one hundred twenty-three million, nine hundred forty-four thousand, eight hundred fifty-five".