421301432243 has 4 divisors (see below), whose sum is σ = 423049571208. Its totient is φ = 419553293280.

The previous prime is 421301432239. The next prime is 421301432269. The reversal of 421301432243 is 342234103124.

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 421301432243 - 2² = 421301432239 is a prime.

It is a super-2 number, since 2×421301432243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421301432143) 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, 874069121 + ... + 874069602.

It is an arithmetic number, because the mean of its divisors is an integer number (105762392802).

Almost surely, 2^421301432243 is an apocalyptic number.

421301432243 is a deficient number, since it is larger than the sum of its proper divisors (1748138965).

421301432243 is a wasteful number, since it uses less digits than its factorization.

421301432243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748138964.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 421301432243 its reverse (342234103124), we get a palindrome (763535535367).

The spelling of 421301432243 in words is "four hundred twenty-one billion, three hundred one million, four hundred thirty-two thousand, two hundred forty-three".