420428068 has 6 divisors (see below), whose sum is σ = 735749126. Its totient is φ = 210214032.

The previous prime is 420428053. The next prime is 420428081. The reversal of 420428068 is 860824024.

It can be written as a sum of positive squares in only one way, i.e., 410953984 + 9474084 = 20272^2 + 3078^2 .

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 as a sum of consecutive naturals, namely, 52553505 + ... + 52553512.

Almost surely, 2^420428068 is an apocalyptic number.

It is an amenable number.

420428068 is a deficient number, since it is larger than the sum of its proper divisors (315321058).

420428068 is a wasteful number, since it uses less digits than its factorization.

420428068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105107021 (or 105107019 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 420428068 is about 20504.3426619826. The cubic root of 420428068 is about 749.1415766688.

The spelling of 420428068 in words is "four hundred twenty million, four hundred twenty-eight thousand, sixty-eight".