242531847 has 16 divisors (see below), whose sum is σ = 361120000. Its totient is φ = 160871832.

The previous prime is 242531837. The next prime is 242531881. The reversal of 242531847 is 748135242.

It is a happy number.

242531847 is a `hidden beast` number, since 2 + 42 + 531 + 84 + 7 = 666.

It is not a de Polignac number, because 242531847 - 2¹¹ = 242529799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242531837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17197 + ... + 27942.

It is an arithmetic number, because the mean of its divisors is an integer number (22570000).

Almost surely, 2^242531847 is an apocalyptic number.

242531847 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

242531847 is a deficient number, since it is larger than the sum of its proper divisors (118588153).

242531847 is a wasteful number, since it uses less digits than its factorization.

242531847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45347 (or 45341 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 242531847 is about 15573.4340143720. The cubic root of 242531847 is about 623.6241495861.

The spelling of 242531847 in words is "two hundred forty-two million, five hundred thirty-one thousand, eight hundred forty-seven".