42135250 has 16 divisors (see below), whose sum is σ = 78877656. Its totient is φ = 16854000.

The previous prime is 42135239. The next prime is 42135251. The reversal of 42135250 is 5253124.

42135250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26429881 + 15705369 = 5141^2 + 3963^2 .

It is not an unprimeable number, because it can be changed into a prime (42135251) 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 7 ways as a sum of consecutive naturals, for example, 84021 + ... + 84520.

Almost surely, 2^42135250 is an apocalyptic number.

42135250 is a deficient number, since it is larger than the sum of its proper divisors (36742406).

42135250 is a wasteful number, since it uses less digits than its factorization.

42135250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168558 (or 168548 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42135250 is about 6491.1670753417. The cubic root of 42135250 is about 347.9753858048.

Adding to 42135250 its reverse (5253124), we get a palindrome (47388374).

The spelling of 42135250 in words is "forty-two million, one hundred thirty-five thousand, two hundred fifty".