42500273 has 2 divisors, whose sum is σ = 42500274. Its totient is φ = 42500272.

The previous prime is 42500239. The next prime is 42500281. The reversal of 42500273 is 37200524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37173409 + 5326864 = 6097^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 42500273 - 2¹² = 42496177 is a prime.

It is not a weakly prime, because it can be changed into another prime (42500203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21250136 + 21250137.

It is an arithmetic number, because the mean of its divisors is an integer number (21250137).

Almost surely, 2^42500273 is an apocalyptic number.

It is an amenable number.

42500273 is a deficient number, since it is larger than the sum of its proper divisors (1).

42500273 is an equidigital number, since it uses as much as digits as its factorization.

42500273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 42500273 is about 6519.2233433132. The cubic root of 42500273 is about 348.9773495643.

Adding to 42500273 its reverse (37200524), we get a palindrome (79700797).

The spelling of 42500273 in words is "forty-two million, five hundred thousand, two hundred seventy-three".