421432241243 has 4 divisors (see below), whose sum is σ = 453850105968. Its totient is φ = 389014376520.

The previous prime is 421432241231. The next prime is 421432241317. The reversal of 421432241243 is 342142234124.

It is a happy number.

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 421432241243 - 2⁴ = 421432241227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421432241203) 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, 16208932343 + ... + 16208932368.

It is an arithmetic number, because the mean of its divisors is an integer number (113462526492).

Almost surely, 2^421432241243 is an apocalyptic number.

421432241243 is a deficient number, since it is larger than the sum of its proper divisors (32417864725).

421432241243 is a wasteful number, since it uses less digits than its factorization.

421432241243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32417864724.

The product of its digits is 36864, while the sum is 32.

Adding to 421432241243 its reverse (342142234124), we get a palindrome (763574475367).

The spelling of 421432241243 in words is "four hundred twenty-one billion, four hundred thirty-two million, two hundred forty-one thousand, two hundred forty-three".