421021441204 has 24 divisors (see below), whose sum is σ = 906815412608. Its totient is φ = 166557932640.

The previous prime is 421021441067. The next prime is 421021441223. The reversal of 421021441204 is 402144120124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578325792 + ... + 578326519.

Almost surely, 2^421021441204 is an apocalyptic number.

It is an amenable number.

421021441204 is an abundant number, since it is smaller than the sum of its proper divisors (485793971404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421021441204 is a wasteful number, since it uses less digits than its factorization.

421021441204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156652335 (or 1156652333 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 421021441204 its reverse (402144120124), we get a palindrome (823165561328).

The spelling of 421021441204 in words is "four hundred twenty-one billion, twenty-one million, four hundred forty-one thousand, two hundred four".