43421035342421 has 8 divisors (see below), whose sum is σ = 47458972756704. Its totient is φ = 39398193022320.

The previous prime is 43421035342387. The next prime is 43421035342439. The reversal of 43421035342421 is 12424353012434.

It is a happy number.

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

It is not a de Polignac number, because 43421035342421 - 2¹⁴ = 43421035326037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43421035342921) 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, 3773767526 + ... + 3773779031.

It is an arithmetic number, because the mean of its divisors is an integer number (5932371594588).

Almost surely, 2^{43421035342421} is an apocalyptic number.

It is an amenable number.

43421035342421 is a deficient number, since it is larger than the sum of its proper divisors (4037937414283).

43421035342421 is a wasteful number, since it uses less digits than its factorization.

43421035342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7547547091.

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 43421035342421 its reverse (12424353012434), we get a palindrome (55845388354855).

The spelling of 43421035342421 in words is "forty-three trillion, four hundred twenty-one billion, thirty-five million, three hundred forty-two thousand, four hundred twenty-one".