420020600 has 48 divisors (see below), whose sum is σ = 985558200. Its totient is φ = 166458240.

The previous prime is 420020599. The next prime is 420020617. The reversal of 420020600 is 6020024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12167 + ... + 31433.

Almost surely, 2^420020600 is an apocalyptic number.

420020600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420020600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492779100).

420020600 is an abundant number, since it is smaller than the sum of its proper divisors (565537600).

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

420020600 is a wasteful number, since it uses less digits than its factorization.

420020600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19392 (or 19383 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 420020600 is about 20494.4041142942. The cubic root of 420020600 is about 748.8994822337.

Adding to 420020600 its reverse (6020024), we get a palindrome (426040624).

The spelling of 420020600 in words is "four hundred twenty million, twenty thousand, six hundred".