242942487 has 4 divisors (see below), whose sum is σ = 323923320. Its totient is φ = 161961656.

The previous prime is 242942477. The next prime is 242942489. The reversal of 242942487 is 784249242.

242942487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242942487 - 2⁶ = 242942423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242942489) 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, 40490412 + ... + 40490417.

It is an arithmetic number, because the mean of its divisors is an integer number (80980830).

Almost surely, 2^242942487 is an apocalyptic number.

242942487 is a deficient number, since it is larger than the sum of its proper divisors (80980833).

242942487 is an equidigital number, since it uses as much as digits as its factorization.

242942487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80980832.

The product of its digits is 258048, while the sum is 42.

The square root of 242942487 is about 15586.6124286196. The cubic root of 242942487 is about 623.9759118126.

The spelling of 242942487 in words is "two hundred forty-two million, nine hundred forty-two thousand, four hundred eighty-seven".