243432419 has 4 divisors (see below), whose sum is σ = 243801360. Its totient is φ = 243063480.

The previous prime is 243432403. The next prime is 243432421. The reversal of 243432419 is 914234342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243432419 - 2⁴ = 243432403 is a prime.

It is a super-2 number, since 2×243432419² = 118518685240383122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243432499) 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, 183479 + ... + 184800.

It is an arithmetic number, because the mean of its divisors is an integer number (60950340).

Almost surely, 2^243432419 is an apocalyptic number.

243432419 is a deficient number, since it is larger than the sum of its proper divisors (368941).

243432419 is an equidigital number, since it uses as much as digits as its factorization.

243432419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368940.

The product of its digits is 20736, while the sum is 32.

The square root of 243432419 is about 15602.3209491409. The cubic root of 243432419 is about 624.3950789150.

It can be divided in two parts, 24343 and 2419, that added together give a palindrome (26762).

The spelling of 243432419 in words is "two hundred forty-three million, four hundred thirty-two thousand, four hundred nineteen".