420231400 has 24 divisors (see below), whose sum is σ = 977038470. Its totient is φ = 168092480.

The previous prime is 420231397. The next prime is 420231439. The reversal of 420231400 is 4132024.

It can be written as a sum of positive squares in 3 ways, for example, as 367028964 + 53202436 = 19158^2 + 7294^2 .

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, 1050379 + ... + 1050778.

Almost surely, 2^420231400 is an apocalyptic number.

420231400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420231400 is an abundant number, since it is smaller than the sum of its proper divisors (556807070).

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

420231400 is a wasteful number, since it uses less digits than its factorization.

420231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101173 (or 2101164 counting only the distinct ones).

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

The square root of 420231400 is about 20499.5463364436. The cubic root of 420231400 is about 749.0247472071.

Adding to 420231400 its reverse (4132024), we get a palindrome (424363424).

The spelling of 420231400 in words is "four hundred twenty million, two hundred thirty-one thousand, four hundred".