243424099 has 6 divisors (see below), whose sum is σ = 247483860. Its totient is φ = 239429880.

The previous prime is 243424091. The next prime is 243424133. The reversal of 243424099 is 990424342.

243424099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243424099 - 2³ = 243424091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243424091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28989 + ... + 36430.

It is an arithmetic number, because the mean of its divisors is an integer number (41247310).

Almost surely, 2^243424099 is an apocalyptic number.

243424099 is a deficient number, since it is larger than the sum of its proper divisors (4059761).

243424099 is an frugal number, since it uses more digits than its factorization.

243424099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65541 (or 65480 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 243424099 is about 15602.0543198644. The cubic root of 243424099 is about 624.3879653373.

It can be divided in two parts, 24342 and 4099, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 243424099 in words is "two hundred forty-three million, four hundred twenty-four thousand, ninety-nine".