420650 has 24 divisors (see below), whose sum is σ = 803520. Its totient is φ = 163760.

The previous prime is 420613. The next prime is 420671. The reversal of 420650 is 56024.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2261 + ... + 2439.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2⁴²⁰⁶⁵⁰ is an apocalyptic number.

420650 is a deficient number, since it is larger than the sum of its proper divisors (382870).

420650 is a wasteful number, since it uses less digits than its factorization.

420650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 420650 is about 648.5753618509. The cubic root of 420650 is about 74.9273370314.

Adding to 420650 its reverse (56024), we get a palindrome (476674).

The spelling of 420650 in words is "four hundred twenty thousand, six hundred fifty".