242548387 has 4 divisors (see below), whose sum is σ = 242579536. Its totient is φ = 242517240.

The previous prime is 242548379. The next prime is 242548391. The reversal of 242548387 is 783845242.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 242548387 - 2³ = 242548379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242548687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7738 + ... + 23344.

It is an arithmetic number, because the mean of its divisors is an integer number (60644884).

Almost surely, 2^242548387 is an apocalyptic number.

242548387 is a deficient number, since it is larger than the sum of its proper divisors (31149).

242548387 is a wasteful number, since it uses less digits than its factorization.

242548387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31148.

The product of its digits is 430080, while the sum is 43.

The square root of 242548387 is about 15573.9650378444. The cubic root of 242548387 is about 623.6383257436.

The spelling of 242548387 in words is "two hundred forty-two million, five hundred forty-eight thousand, three hundred eighty-seven".