243432143421 has 8 divisors (see below), whose sum is σ = 325619845824. Its totient is φ = 161766268320.

The previous prime is 243432143417. The next prime is 243432143431. The reversal of 243432143421 is 124341234342.

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

It is not a de Polignac number, because 243432143421 - 2² = 243432143417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243432143401) 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, 130455736 + ... + 130457601.

It is an arithmetic number, because the mean of its divisors is an integer number (40702480728).

Almost surely, 2^243432143421 is an apocalyptic number.

It is an amenable number.

243432143421 is a deficient number, since it is larger than the sum of its proper divisors (82187702403).

243432143421 is a wasteful number, since it uses less digits than its factorization.

243432143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260913651.

The product of its digits is 55296, while the sum is 33.

Adding to 243432143421 its reverse (124341234342), we get a palindrome (367773377763).

It can be divided in two parts, 2434321 and 43421, that added together give a palindrome (2477742).

The spelling of 243432143421 in words is "two hundred forty-three billion, four hundred thirty-two million, one hundred forty-three thousand, four hundred twenty-one".