123878258 has 16 divisors (see below), whose sum is σ = 212513280. Its totient is φ = 53053056.

The previous prime is 123878231. The next prime is 123878273. The reversal of 123878258 is 852878321.

It is a super-2 number, since 2×123878258² = 30691645610229128, which contains 22 as substring.

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, 27938 + ... + 32066.

It is an arithmetic number, because the mean of its divisors is an integer number (13282080).

Almost surely, 2^123878258 is an apocalyptic number.

123878258 is a deficient number, since it is larger than the sum of its proper divisors (88635022).

123878258 is a wasteful number, since it uses less digits than its factorization.

123878258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281.

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

The square root of 123878258 is about 11130.0610061221. The cubic root of 123878258 is about 498.4998475868.

The spelling of 123878258 in words is "one hundred twenty-three million, eight hundred seventy-eight thousand, two hundred fifty-eight".