123978948 has 12 divisors (see below), whose sum is σ = 289284240. Its totient is φ = 41326312.

The previous prime is 123978931. The next prime is 123978961. The reversal of 123978948 is 849879321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 123978948.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5165778 + ... + 5165801.

It is an arithmetic number, because the mean of its divisors is an integer number (24107020).

Almost surely, 2^123978948 is an apocalyptic number.

It is an amenable number.

123978948 is an abundant number, since it is smaller than the sum of its proper divisors (165305292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123978948 is a wasteful number, since it uses less digits than its factorization.

123978948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10331586 (or 10331584 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 123978948 is about 11134.5834228318. The cubic root of 123978948 is about 498.6348735851.

The spelling of 123978948 in words is "one hundred twenty-three million, nine hundred seventy-eight thousand, nine hundred forty-eight".