420020260 has 24 divisors (see below), whose sum is σ = 962228736. Its totient is φ = 152734560.

The previous prime is 420020243. The next prime is 420020297. The reversal of 420020260 is 62020024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954372 + ... + 954811.

It is an arithmetic number, because the mean of its divisors is an integer number (40092864).

Almost surely, 2^420020260 is an apocalyptic number.

It is an amenable number.

420020260 is an abundant number, since it is smaller than the sum of its proper divisors (542208476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420020260 is a wasteful number, since it uses less digits than its factorization.

420020260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909203 (or 1909201 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420020260 is about 20494.3958193453. The cubic root of 420020260 is about 748.8992801595.

Adding to 420020260 its reverse (62020024), we get a palindrome (482040284).

The spelling of 420020260 in words is "four hundred twenty million, twenty thousand, two hundred sixty".