420021401204 has 12 divisors (see below), whose sum is σ = 735477869700. Its totient is φ = 209884867008.

The previous prime is 420021401171. The next prime is 420021401213. The reversal of 420021401204 is 402104120024.

It can be written as a sum of positive squares in 2 ways, for example, as 143921596900 + 276099804304 = 379370^2 + 525452^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31450889 + ... + 31464240.

It is an arithmetic number, because the mean of its divisors is an integer number (61289822475).

Almost surely, 2^420021401204 is an apocalyptic number.

It is an amenable number.

420021401204 is a deficient number, since it is larger than the sum of its proper divisors (315456468496).

420021401204 is a wasteful number, since it uses less digits than its factorization.

420021401204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62916802 (or 62916800 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 420021401204 its reverse (402104120024), we get a palindrome (822125521228).

The spelling of 420021401204 in words is "four hundred twenty billion, twenty-one million, four hundred one thousand, two hundred four".