421404021202 has 8 divisors (see below), whose sum is σ = 632111528700. Its totient is φ = 210700178304.

The previous prime is 421404021197. The next prime is 421404021217. The reversal of 421404021202 is 202120404124.

It can be written as a sum of positive squares in 2 ways, for example, as 346531191561 + 74872829641 = 588669^2 + 273629^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 607927 + ... + 1101082.

Almost surely, 2^421404021202 is an apocalyptic number.

421404021202 is a deficient number, since it is larger than the sum of its proper divisors (210707507498).

421404021202 is a wasteful number, since it uses less digits than its factorization.

421404021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832300.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 421404021202 its reverse (202120404124), we get a palindrome (623524425326).

The spelling of 421404021202 in words is "four hundred twenty-one billion, four hundred four million, twenty-one thousand, two hundred two".