420002432 has 16 divisors (see below), whose sum is σ = 836723850. Its totient is φ = 210001152.

The previous prime is 420002419. The next prime is 420002441. The reversal of 420002432 is 234200024.

It can be written as a sum of positive squares in only one way, i.e., 328914496 + 91087936 = 18136^2 + 9544^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 420002432.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640507 + ... + 1640762.

Almost surely, 2^420002432 is an apocalyptic number.

It is an amenable number.

420002432 is a deficient number, since it is larger than the sum of its proper divisors (416721418).

420002432 is an equidigital number, since it uses as much as digits as its factorization.

420002432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281283 (or 3281271 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 420002432 is about 20493.9608665577. The cubic root of 420002432 is about 748.8886841903. Note that the first 3 decimals are identical.

Adding to 420002432 its reverse (234200024), we get a palindrome (654202456).

The spelling of 420002432 in words is "four hundred twenty million, two thousand, four hundred thirty-two".