123780378 has 8 divisors (see below), whose sum is σ = 247560768. Its totient is φ = 41260124.

The previous prime is 123780373. The next prime is 123780379. The reversal of 123780378 is 873087321.

It is a sphenic number, since it is the product of 3 distinct primes.

123780378 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123780373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10315026 + ... + 10315037.

It is an arithmetic number, because the mean of its divisors is an integer number (30945096).

Almost surely, 2^123780378 is an apocalyptic number.

123780378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123780378 is a wasteful number, since it uses less digits than its factorization.

123780378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20630068.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 123780378 is about 11125.6630364217. The cubic root of 123780378 is about 498.3685196673.

The spelling of 123780378 in words is "one hundred twenty-three million, seven hundred eighty thousand, three hundred seventy-eight".