420710630 has 32 divisors (see below), whose sum is σ = 776369664. Its totient is φ = 164069856.

The previous prime is 420710623. The next prime is 420710659. The reversal of 420710630 is 36017024.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420710596 and 420710605.

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 15 ways as a sum of consecutive naturals, for example, 131429 + ... + 134591.

It is an arithmetic number, because the mean of its divisors is an integer number (24261552).

Almost surely, 2^420710630 is an apocalyptic number.

420710630 is a deficient number, since it is larger than the sum of its proper divisors (355659034).

420710630 is a wasteful number, since it uses less digits than its factorization.

420710630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 420710630 is about 20511.2318011376. The cubic root of 420710630 is about 749.3093671933.

Adding to 420710630 its reverse (36017024), we get a palindrome (456727654).

The spelling of 420710630 in words is "four hundred twenty million, seven hundred ten thousand, six hundred thirty".