420004400 has 30 divisors (see below), whose sum is σ = 1009061532. Its totient is φ = 168001600.

The previous prime is 420004393. The next prime is 420004411. The reversal of 420004400 is 4400024.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 524606 + ... + 525405.

Almost surely, 2^420004400 is an apocalyptic number.

420004400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420004400 is an abundant number, since it is smaller than the sum of its proper divisors (589057132).

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

420004400 is a wasteful number, since it uses less digits than its factorization.

420004400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050029 (or 1050018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 420004400 is about 20494.0088806461. The cubic root of 420004400 is about 748.8898538745.

Adding to 420004400 its reverse (4400024), we get a palindrome (424404424).

The spelling of 420004400 in words is "four hundred twenty million, four thousand, four hundred".