123279478 has 16 divisors (see below), whose sum is σ = 223768224. Its totient is φ = 49726080.

The previous prime is 123279463. The next prime is 123279479. The reversal of 123279478 is 874972321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123279479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258753 + ... + 259228.

It is an arithmetic number, because the mean of its divisors is an integer number (13985514).

Almost surely, 2^123279478 is an apocalyptic number.

123279478 is a deficient number, since it is larger than the sum of its proper divisors (100488746).

123279478 is a wasteful number, since it uses less digits than its factorization.

123279478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518007.

The product of its digits is 169344, while the sum is 43.

The square root of 123279478 is about 11103.1291985638. The cubic root of 123279478 is about 497.6953642962.

The spelling of 123279478 in words is "one hundred twenty-three million, two hundred seventy-nine thousand, four hundred seventy-eight".