42205250 has 32 divisors (see below), whose sum is σ = 79393392. Its totient is φ = 16800000.

The previous prime is 42205217. The next prime is 42205279. The reversal of 42205250 is 5250224.

It can be written as a sum of positive squares in 8 ways, for example, as 1129969 + 41075281 = 1063^2 + 6409^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100040 + ... + 100460.

Almost surely, 2^42205250 is an apocalyptic number.

42205250 is a deficient number, since it is larger than the sum of its proper divisors (37188142).

42205250 is a wasteful number, since it uses less digits than its factorization.

42205250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 42205250 is about 6496.5567803260. The cubic root of 42205250 is about 348.1679783134.

Adding to 42205250 its reverse (5250224), we get a palindrome (47455474).

The spelling of 42205250 in words is "forty-two million, two hundred five thousand, two hundred fifty".