123885278 has 16 divisors (see below), whose sum is σ = 205749504. Its totient is φ = 55470360.

The previous prime is 123885257. The next prime is 123885397. The reversal of 123885278 is 872588321.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40550 + ... + 43497.

It is an arithmetic number, because the mean of its divisors is an integer number (12859344).

Almost surely, 2^123885278 is an apocalyptic number.

123885278 is a deficient number, since it is larger than the sum of its proper divisors (81864226).

123885278 is a wasteful number, since it uses less digits than its factorization.

123885278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84127.

The product of its digits is 215040, while the sum is 44.

The square root of 123885278 is about 11130.3763638073. The cubic root of 123885278 is about 498.5092638285.

The spelling of 123885278 in words is "one hundred twenty-three million, eight hundred eighty-five thousand, two hundred seventy-eight".