242641386 has 32 divisors (see below), whose sum is σ = 580681920. Its totient is φ = 74658672.

The previous prime is 242641351. The next prime is 242641387. The reversal of 242641386 is 683146242.

242641386 is a `hidden beast` number, since 2 + 4 + 2 + 641 + 3 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 242641386.

It is not an unprimeable number, because it can be changed into a prime (242641387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172120 + ... + 173523.

It is an arithmetic number, because the mean of its divisors is an integer number (18146310).

Almost surely, 2^242641386 is an apocalyptic number.

242641386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

242641386 is an abundant number, since it is smaller than the sum of its proper divisors (338040534).

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

242641386 is a wasteful number, since it uses less digits than its factorization.

242641386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345667 (or 345661 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 242641386 is about 15576.9504717708. The cubic root of 242641386 is about 623.7180216349.

The spelling of 242641386 in words is "two hundred forty-two million, six hundred forty-one thousand, three hundred eighty-six".