242489578 has 8 divisors (see below), whose sum is σ = 367821540. Its totient is φ = 119882400.

The previous prime is 242489573. The next prime is 242489593. The reversal of 242489578 is 875984242.

242489578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 226111369 + 16378209 = 15037^2 + 4047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (242489573) 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, 680973 + ... + 681328.

Almost surely, 2^242489578 is an apocalyptic number.

242489578 is a deficient number, since it is larger than the sum of its proper divisors (125331962).

242489578 is a wasteful number, since it uses less digits than its factorization.

242489578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362392.

The product of its digits is 1290240, while the sum is 49.

The square root of 242489578 is about 15572.0768685490. The cubic root of 242489578 is about 623.5879186045.

The spelling of 242489578 in words is "two hundred forty-two million, four hundred eighty-nine thousand, five hundred seventy-eight".