420000000 has 288 divisors, whose sum is σ = 1596870912. Its totient is φ = 96000000.

The previous prime is 419999947. The next prime is 420000029. The reversal of 420000000 is 24.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59999997 + ... + 60000003.

Almost surely, 2^420000000 is an apocalyptic number.

420000000 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 420000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798435456).

420000000 is an abundant number, since it is smaller than the sum of its proper divisors (1176870912).

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

420000000 is an frugal number, since it uses more digits than its factorization.

420000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 6.

The square root of 420000000 is about 20493.9015319192. The cubic root of 420000000 is about 748.8872387219.

Adding to 420000000 its reverse (24), we get a palindrome (420000024).

The spelling of 420000000 in words is "four hundred twenty million", and thus it is an aban number.