421041340243 has 8 divisors (see below), whose sum is σ = 431864622000. Its totient is φ = 410324692128.

The previous prime is 421041340231. The next prime is 421041340253. The reversal of 421041340243 is 342043140124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421041340243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421041340253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26650413 + ... + 26666206.

It is an arithmetic number, because the mean of its divisors is an integer number (53983077750).

Almost surely, 2^421041340243 is an apocalyptic number.

421041340243 is a deficient number, since it is larger than the sum of its proper divisors (10823281757).

421041340243 is a wasteful number, since it uses less digits than its factorization.

421041340243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53316821.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 421041340243 its reverse (342043140124), we get a palindrome (763084480367).

The spelling of 421041340243 in words is "four hundred twenty-one billion, forty-one million, three hundred forty thousand, two hundred forty-three".