420400352 has 24 divisors (see below), whose sum is σ = 828300312. Its totient is φ = 210038400.

The previous prime is 420400339. The next prime is 420400369. The reversal of 420400352 is 253004024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44702 + ... + 53282.

It is an arithmetic number, because the mean of its divisors is an integer number (34512513).

Almost surely, 2^420400352 is an apocalyptic number.

It is an amenable number.

420400352 is a deficient number, since it is larger than the sum of its proper divisors (407899960).

420400352 is a wasteful number, since it uses less digits than its factorization.

420400352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10122 (or 10114 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 420400352 is about 20503.6667940152. Note that the first 3 decimals coincide. The cubic root of 420400352 is about 749.1251143488.

Adding to 420400352 its reverse (253004024), we get a palindrome (673404376).

The spelling of 420400352 in words is "four hundred twenty million, four hundred thousand, three hundred fifty-two".