378678121 has 8 divisors (see below), whose sum is σ = 383975424. Its totient is φ = 373398480.

The previous prime is 378678089. The next prime is 378678127. The reversal of 378678121 is 121876873.

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

It is a cyclic number.

It is not a de Polignac number, because 378678121 - 2⁵ = 378678089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378678127) 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, 42136 + ... + 50326.

It is an arithmetic number, because the mean of its divisors is an integer number (47996928).

Almost surely, 2^378678121 is an apocalyptic number.

It is an amenable number.

378678121 is a deficient number, since it is larger than the sum of its proper divisors (5297303).

378678121 is an equidigital number, since it uses as much as digits as its factorization.

378678121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8831.

The product of its digits is 112896, while the sum is 43.

The square root of 378678121 is about 19459.6536711217. The cubic root of 378678121 is about 723.4747934639.

The spelling of 378678121 in words is "three hundred seventy-eight million, six hundred seventy-eight thousand, one hundred twenty-one".