123678416 has 10 divisors (see below), whose sum is σ = 239626962. Its totient is φ = 61839200.

The previous prime is 123678413. The next prime is 123678419. The reversal of 123678416 is 614876321.

It is an interprime number because it is at equal distance from previous prime (123678413) and next prime (123678419).

It can be written as a sum of positive squares in only one way, i.e., 121440400 + 2238016 = 11020^2 + 1496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123678416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123678413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3864935 + ... + 3864966.

Almost surely, 2^123678416 is an apocalyptic number.

123678416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123678416 is a deficient number, since it is larger than the sum of its proper divisors (115948546).

123678416 is an equidigital number, since it uses as much as digits as its factorization.

123678416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729909 (or 7729903 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 123678416 is about 11121.0798036881. The cubic root of 123678416 is about 498.2316411873.

The spelling of 123678416 in words is "one hundred twenty-three million, six hundred seventy-eight thousand, four hundred sixteen".