420004420 has 24 divisors (see below), whose sum is σ = 962192448. Its totient is φ = 152728800.

The previous prime is 420004411. The next prime is 420004433. The reversal of 420004420 is 24400024.

It is a junction number, because it is equal to n+sod(n) for n = 420004394 and 420004403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954336 + ... + 954775.

It is an arithmetic number, because the mean of its divisors is an integer number (40091352).

Almost surely, 2^420004420 is an apocalyptic number.

It is an amenable number.

420004420 is an abundant number, since it is smaller than the sum of its proper divisors (542188028).

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

420004420 is a wasteful number, since it uses less digits than its factorization.

420004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909131 (or 1909129 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 420004420 is about 20494.0093685935. The cubic root of 420004420 is about 748.8898657615.

Adding to 420004420 its reverse (24400024), we get a palindrome (444404444).

The spelling of 420004420 in words is "four hundred twenty million, four thousand, four hundred twenty".