242331489 has 9 divisors (see below), whose sum is σ = 350101843. Its totient is φ = 161523192.

The previous prime is 242331487. The next prime is 242331493. The reversal of 242331489 is 984133242.

The square root of 242331489 is 15567.

It is a perfect power (a square), and thus also a powerful number.

242331489 is a `hidden beast` number, since 242 + 331 + 4 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 191351889 + 50979600 = 13833^2 + 7140^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 242331489 - 2¹ = 242331487 is a prime.

It is a super-3 number, since 3×242331489³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242331487) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44107 + ... + 49295.

Almost surely, 2^242331489 is an apocalyptic number.

242331489 is the 15567-th square number.

242331489 is the 7784-th centered octagonal number.

It is an amenable number.

242331489 is a deficient number, since it is larger than the sum of its proper divisors (107770354).

242331489 is an frugal number, since it uses more digits than its factorization.

242331489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384 (or 5192 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The cubic root of 242331489 is about 623.4523748802.

Multiplying 242331489 by its sum of digits (36), we get a square (8723933604 = 93402²).

The spelling of 242331489 in words is "two hundred forty-two million, three hundred thirty-one thousand, four hundred eighty-nine".