242378 has 4 divisors (see below), whose sum is σ = 363570. Its totient is φ = 121188.

The previous prime is 242377. The next prime is 242393. The reversal of 242378 is 873242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873242 = 2 ⋅436621.

It can be written as a sum of positive squares in only one way, i.e., 165649 + 76729 = 407^2 + 277^2 .

It is a d-powerful number, because it can be written as 2³ + 4⁸ + 3¹⁰ + 2⁷ + 7⁶ + 8 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (242371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60593 + ... + 60596.

2²⁴²³⁷⁸ is an apocalyptic number.

242378 is a deficient number, since it is larger than the sum of its proper divisors (121192).

242378 is a wasteful number, since it uses less digits than its factorization.

242378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121191.

The product of its digits is 2688, while the sum is 26.

The square root of 242378 is about 492.3190022739. The cubic root of 242378 is about 62.3492259006.

The spelling of 242378 in words is "two hundred forty-two thousand, three hundred seventy-eight".