420220144250 has 16 divisors (see below), whose sum is σ = 786652110504. Its totient is φ = 168088057600.

The previous prime is 420220144133. The next prime is 420220144259. The reversal of 420220144250 is 52441022024.

It can be written as a sum of positive squares in 4 ways, for example, as 157991145361 + 262228998889 = 397481^2 + 512083^2 .

It is not an unprimeable number, because it can be changed into a prime (420220144259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840440039 + ... + 840440538.

Almost surely, 2^420220144250 is an apocalyptic number.

420220144250 is a deficient number, since it is larger than the sum of its proper divisors (366431966254).

420220144250 is a wasteful number, since it uses less digits than its factorization.

420220144250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680880594 (or 1680880584 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 420220144250 its reverse (52441022024), we get a palindrome (472661166274).

The spelling of 420220144250 in words is "four hundred twenty billion, two hundred twenty million, one hundred forty-four thousand, two hundred fifty".