378902123 has 4 divisors (see below), whose sum is σ = 398844360. Its totient is φ = 358959888.

The previous prime is 378902101. The next prime is 378902129. The reversal of 378902123 is 321209873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378902123 - 2⁶ = 378902059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378902129) 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, 9971090 + ... + 9971127.

It is an arithmetic number, because the mean of its divisors is an integer number (99711090).

Almost surely, 2^378902123 is an apocalyptic number.

378902123 is a deficient number, since it is larger than the sum of its proper divisors (19942237).

378902123 is a wasteful number, since it uses less digits than its factorization.

378902123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19942236.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 378902123 is about 19465.4083697209. The cubic root of 378902123 is about 723.6174193049.

The spelling of 378902123 in words is "three hundred seventy-eight million, nine hundred two thousand, one hundred twenty-three".