378442 has 16 divisors (see below), whose sum is σ = 624960. Its totient is φ = 171072.

The previous prime is 378439. The next prime is 378449. The reversal of 378442 is 244873.

It is a self number, because there is not a number n which added to its sum of digits gives 378442.

It is not an unprimeable number, because it can be changed into a prime (378449) 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, 658 + ... + 1090.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2³⁷⁸⁴⁴² is an apocalyptic number.

378442 is a deficient number, since it is larger than the sum of its proper divisors (246518).

378442 is a wasteful number, since it uses less digits than its factorization.

378442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its digits is 5376, while the sum is 28.

The square root of 378442 is about 615.1763974666. The cubic root of 378442 is about 72.3324390346.

It can be divided in two parts, 378 and 442, that added together give a triangular number (820 = T₄₀).

The spelling of 378442 in words is "three hundred seventy-eight thousand, four hundred forty-two".