420204135 has 48 divisors (see below), whose sum is σ = 759780864. Its totient is φ = 197847936.

The previous prime is 420204131. The next prime is 420204143. The reversal of 420204135 is 531402024.

It is not a de Polignac number, because 420204135 - 2² = 420204131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420204131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54702 + ... + 61908.

It is an arithmetic number, because the mean of its divisors is an integer number (15828768).

Almost surely, 2^420204135 is an apocalyptic number.

420204135 is a deficient number, since it is larger than the sum of its proper divisors (339576729).

420204135 is a wasteful number, since it uses less digits than its factorization.

420204135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264 (or 7251 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 420204135 is about 20498.8813109399. The cubic root of 420204135 is about 749.0085477185.

Adding to 420204135 its reverse (531402024), we get a palindrome (951606159).

The spelling of 420204135 in words is "four hundred twenty million, two hundred four thousand, one hundred thirty-five".