421432241242 has 4 divisors (see below), whose sum is σ = 632148361866. Its totient is φ = 210716120620.

The previous prime is 421432241231. The next prime is 421432241317. The reversal of 421432241242 is 242142234124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 420216394081 + 1215847161 = 648241^2 + 34869^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105358060309 + ... + 105358060312.

Almost surely, 2^421432241242 is an apocalyptic number.

421432241242 is a deficient number, since it is larger than the sum of its proper divisors (210716120624).

421432241242 is a wasteful number, since it uses less digits than its factorization.

421432241242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210716120623.

The product of its digits is 24576, while the sum is 31.

Adding to 421432241242 its reverse (242142234124), we get a palindrome (663574475366).

The spelling of 421432241242 in words is "four hundred twenty-one billion, four hundred thirty-two million, two hundred forty-one thousand, two hundred forty-two".