420311650 has 36 divisors (see below), whose sum is σ = 859323906. Its totient is φ = 152838400.

The previous prime is 420311641. The next prime is 420311659. The reversal of 420311650 is 56113024.

It is an interprime number because it is at equal distance from previous prime (420311641) and next prime (420311659).

It can be written as a sum of positive squares in 3 ways, for example, as 324252049 + 96059601 = 18007^2 + 9801^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (420311659) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 28687 + ... + 40786.

Almost surely, 2^420311650 is an apocalyptic number.

420311650 is an abundant number, since it is smaller than the sum of its proper divisors (439012256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420311650 is a wasteful number, since it uses less digits than its factorization.

420311650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69507 (or 69491 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 420311650 is about 20501.5036033946. The cubic root of 420311650 is about 749.0724236461.

Adding to 420311650 its reverse (56113024), we get a palindrome (476424674).

It can be divided in two parts, 42031 and 1650, that added together give a square (43681 = 209²).

The spelling of 420311650 in words is "four hundred twenty million, three hundred eleven thousand, six hundred fifty".