243012442 has 8 divisors (see below), whose sum is σ = 365763636. Its totient is φ = 121091232.

The previous prime is 243012421. The next prime is 243012443. The reversal of 243012442 is 244210342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 184932801 + 58079641 = 13599^2 + 7621^2 .

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

It is a super-3 number, since 3×243012442³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (243012443) 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, 206763 + ... + 207934.

Almost surely, 2^243012442 is an apocalyptic number.

243012442 is a deficient number, since it is larger than the sum of its proper divisors (122751194).

243012442 is a wasteful number, since it uses less digits than its factorization.

243012442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414992.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 243012442 is about 15588.8563403477. The cubic root of 243012442 is about 624.0357971054.

Adding to 243012442 its reverse (244210342), we get a palindrome (487222784).

The spelling of 243012442 in words is "two hundred forty-three million, twelve thousand, four hundred forty-two".