42500133 has 20 divisors (see below), whose sum is σ = 68373228. Its totient is φ = 26153280.

The previous prime is 42500123. The next prime is 42500137. The reversal of 42500133 is 33100524.

It can be written as a sum of positive squares in 2 ways, for example, as 25583364 + 16916769 = 5058^2 + 4113^2 .

It is not a de Polignac number, because 42500133 - 2¹⁸ = 42237989 is a prime.

It is a super-2 number, since 2×42500133² = 3612522610035378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42500137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19128 + ... + 21233.

Almost surely, 2^42500133 is an apocalyptic number.

It is an amenable number.

42500133 is a deficient number, since it is larger than the sum of its proper divisors (25873095).

42500133 is a wasteful number, since it uses less digits than its factorization.

42500133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40386 (or 40377 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 42500133 is about 6519.2126058290. The cubic root of 42500133 is about 348.9769663756.

Adding to 42500133 its reverse (33100524), we get a palindrome (75600657).

The spelling of 42500133 in words is "forty-two million, five hundred thousand, one hundred thirty-three".