242473989 has 16 divisors (see below), whose sum is σ = 328121600. Its totient is φ = 159247296.

The previous prime is 242473961. The next prime is 242473999. The reversal of 242473989 is 989374242.

It is not a de Polignac number, because 242473989 - 2⁹ = 242473477 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 (242473999) 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, 144447 + ... + 146115.

It is an arithmetic number, because the mean of its divisors is an integer number (20507600).

Almost surely, 2^242473989 is an apocalyptic number.

It is an amenable number.

242473989 is a deficient number, since it is larger than the sum of its proper divisors (85647611).

242473989 is a wasteful number, since it uses less digits than its factorization.

242473989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364.

The product of its digits is 870912, while the sum is 48.

The square root of 242473989 is about 15571.5763171235. The cubic root of 242473989 is about 623.5745553905.

The spelling of 242473989 in words is "two hundred forty-two million, four hundred seventy-three thousand, nine hundred eighty-nine".