422643250 has 16 divisors (see below), whose sum is σ = 791188632. Its totient is φ = 169057200.

The previous prime is 422643229. The next prime is 422643281. The reversal of 422643250 is 52346224.

It can be written as a sum of positive squares in 4 ways, for example, as 68112009 + 354531241 = 8253^2 + 18829^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 845037 + ... + 845536.

Almost surely, 2^422643250 is an apocalyptic number.

422643250 is a deficient number, since it is larger than the sum of its proper divisors (368545382).

422643250 is a wasteful number, since it uses less digits than its factorization.

422643250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690590 (or 1690580 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 422643250 is about 20558.2890825088. The cubic root of 422643250 is about 750.4549831905.

Adding to 422643250 its reverse (52346224), we get a palindrome (474989474).

The spelling of 422643250 in words is "four hundred twenty-two million, six hundred forty-three thousand, two hundred fifty".