243421679 has 8 divisors (see below), whose sum is σ = 252192000. Its totient is φ = 234676512.

The previous prime is 243421663. The next prime is 243421699. The reversal of 243421679 is 976124342.

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

It is a cyclic number.

It is not a de Polignac number, because 243421679 - 2⁴ = 243421663 is a prime.

It is a super-2 number, since 2×243421679² = 118508227614358082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243421609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14642 + ... + 26480.

It is an arithmetic number, because the mean of its divisors is an integer number (31524000).

Almost surely, 2^243421679 is an apocalyptic number.

243421679 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

243421679 is a deficient number, since it is larger than the sum of its proper divisors (8770321).

243421679 is a wasteful number, since it uses less digits than its factorization.

243421679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12577.

The product of its digits is 72576, while the sum is 38.

The square root of 243421679 is about 15601.9767657820. The cubic root of 243421679 is about 624.3858962134.

The spelling of 243421679 in words is "two hundred forty-three million, four hundred twenty-one thousand, six hundred seventy-nine".