123038855 has 4 divisors (see below), whose sum is σ = 147646632. Its totient is φ = 98431080.

The previous prime is 123038849. The next prime is 123038857. The reversal of 123038855 is 558830321.

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

It is not a de Polignac number, because 123038855 - 2⁶ = 123038791 is a prime.

It is a super-2 number, since 2×123038855² = 30277119679422050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123038857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12303881 + ... + 12303890.

It is an arithmetic number, because the mean of its divisors is an integer number (36911658).

Almost surely, 2^123038855 is an apocalyptic number.

123038855 is a deficient number, since it is larger than the sum of its proper divisors (24607777).

123038855 is an equidigital number, since it uses as much as digits as its factorization.

123038855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24607776.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 123038855 is about 11092.2880867745. The cubic root of 123038855 is about 497.3713445592.

The spelling of 123038855 in words is "one hundred twenty-three million, thirty-eight thousand, eight hundred fifty-five".