420204430 has 16 divisors (see below), whose sum is σ = 756609984. Its totient is φ = 168028000.

The previous prime is 420204427. The next prime is 420204443. The reversal of 420204430 is 34402024.

It is a junction number, because it is equal to n+sod(n) for n = 420204398 and 420204407.

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, 45180 + ... + 53680.

It is an arithmetic number, because the mean of its divisors is an integer number (47288124).

Almost surely, 2^420204430 is an apocalyptic number.

420204430 is a deficient number, since it is larger than the sum of its proper divisors (336405554).

420204430 is a wasteful number, since it uses less digits than its factorization.

420204430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13451.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 420204430 is about 20498.8885064532. Note that the first 3 decimals coincide. The cubic root of 420204430 is about 749.0087229963.

Adding to 420204430 its reverse (34402024), we get a palindrome (454606454).

The spelling of 420204430 in words is "four hundred twenty million, two hundred four thousand, four hundred thirty".