420752428 has 6 divisors (see below), whose sum is σ = 736316756. Its totient is φ = 210376212.

The previous prime is 420752417. The next prime is 420752443. The reversal of 420752428 is 824257024.

It is a junction number, because it is equal to n+sod(n) for n = 420752393 and 420752402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52594050 + ... + 52594057.

Almost surely, 2^420752428 is an apocalyptic number.

It is an amenable number.

420752428 is a deficient number, since it is larger than the sum of its proper divisors (315564328).

420752428 is a wasteful number, since it uses less digits than its factorization.

420752428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105188111 (or 105188109 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 420752428 is about 20512.2506809955. The cubic root of 420752428 is about 749.3341812369.

The spelling of 420752428 in words is "four hundred twenty million, seven hundred fifty-two thousand, four hundred twenty-eight".