378129 has 8 divisors (see below), whose sum is σ = 507232. Its totient is φ = 250560.

The previous prime is 378127. The next prime is 378137. The reversal of 378129 is 921873.

It is a happy number.

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

It is not a de Polignac number, because 378129 - 2¹ = 378127 is a prime.

It is a Duffinian number.

378129 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 378096 and 378105.

It is not an unprimeable number, because it can be changed into a prime (378127) 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, 462 + ... + 984.

It is an arithmetic number, because the mean of its divisors is an integer number (63404).

2³⁷⁸¹²⁹ is an apocalyptic number.

It is an amenable number.

378129 is a deficient number, since it is larger than the sum of its proper divisors (129103).

378129 is a wasteful number, since it uses less digits than its factorization.

378129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its digits is 3024, while the sum is 30.

The square root of 378129 is about 614.9219462664. The cubic root of 378129 is about 72.3124920785.

The spelling of 378129 in words is "three hundred seventy-eight thousand, one hundred twenty-nine".