242278340 has 24 divisors (see below), whose sum is σ = 520618560. Its totient is φ = 94657248.

The previous prime is 242278319. The next prime is 242278357. The reversal of 242278340 is 43872242.

It is a junction number, because it is equal to n+sod(n) for n = 242278297 and 242278306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140000 + ... + 141719.

It is an arithmetic number, because the mean of its divisors is an integer number (21692440).

Almost surely, 2^242278340 is an apocalyptic number.

242278340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242278340 is an abundant number, since it is smaller than the sum of its proper divisors (278340220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242278340 is a wasteful number, since it uses less digits than its factorization.

242278340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281771 (or 281769 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 242278340 is about 15565.2928016148. The cubic root of 242278340 is about 623.4067922870.

The spelling of 242278340 in words is "two hundred forty-two million, two hundred seventy-eight thousand, three hundred forty".