420620529 has 32 divisors (see below), whose sum is σ = 648345600. Its totient is φ = 237600000.

The previous prime is 420620521. The next prime is 420620587. The reversal of 420620529 is 925026024.

It is not a de Polignac number, because 420620529 - 2³ = 420620521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420620496 and 420620505.

It is not an unprimeable number, because it can be changed into a prime (420620521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1048729 + ... + 1049129.

It is an arithmetic number, because the mean of its divisors is an integer number (20260800).

Almost surely, 2^420620529 is an apocalyptic number.

It is an amenable number.

420620529 is a deficient number, since it is larger than the sum of its proper divisors (227725071).

420620529 is a wasteful number, since it uses less digits than its factorization.

420620529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 420620529 is about 20509.0353015445. The cubic root of 420620529 is about 749.2558717194.

The spelling of 420620529 in words is "four hundred twenty million, six hundred twenty thousand, five hundred twenty-nine".