42203125 has 28 divisors (see below), whose sum is σ = 54921172. Its totient is φ = 32400000.

The previous prime is 42203111. The next prime is 42203131. The reversal of 42203125 is 52130224.

It can be written as a sum of positive squares in 14 ways, for example, as 41075281 + 1127844 = 6409^2 + 1062^2 .

It is not a de Polignac number, because 42203125 - 2¹¹ = 42201077 is a prime.

It is a super-5 number, since 5×42203125⁵ (a number of 39 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 578089 + ... + 578161.

Almost surely, 2^42203125 is an apocalyptic number.

It is an amenable number.

42203125 is a deficient number, since it is larger than the sum of its proper divisors (12718047).

42203125 is an frugal number, since it uses more digits than its factorization.

42203125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 42203125 is about 6496.3932300931. The cubic root of 42203125 is about 348.1621348905.

Adding to 42203125 its reverse (52130224), we get a palindrome (94333349).

The spelling of 42203125 in words is "forty-two million, two hundred three thousand, one hundred twenty-five".