420620135 has 16 divisors (see below), whose sum is σ = 544653984. Its totient is φ = 309992832.

The previous prime is 420620111. The next prime is 420620153. The reversal of 420620135 is 531026024.

It is a cyclic number.

It is not a de Polignac number, because 420620135 - 2⁸ = 420619879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420620135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27809 + ... + 40181.

It is an arithmetic number, because the mean of its divisors is an integer number (34040874).

Almost surely, 2^420620135 is an apocalyptic number.

420620135 is a deficient number, since it is larger than the sum of its proper divisors (124033849).

420620135 is a wasteful number, since it uses less digits than its factorization.

420620135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 420620135 is about 20509.0256960198. The cubic root of 420620135 is about 749.2556377739.

Adding to 420620135 its reverse (531026024), we get a palindrome (951646159).

The spelling of 420620135 in words is "four hundred twenty million, six hundred twenty thousand, one hundred thirty-five".