42526261 has 2 divisors, whose sum is σ = 42526262. Its totient is φ = 42526260.

The previous prime is 42526249. The next prime is 42526279. The reversal of 42526261 is 16262524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42497361 + 28900 = 6519^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 42526261 - 2¹¹ = 42524213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42526361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21263130 + 21263131.

It is an arithmetic number, because the mean of its divisors is an integer number (21263131).

Almost surely, 2^42526261 is an apocalyptic number.

It is an amenable number.

42526261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42526261 is an equidigital number, since it uses as much as digits as its factorization.

42526261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 42526261 is about 6521.2162209208. The cubic root of 42526261 is about 349.0484657777.

Adding to 42526261 its reverse (16262524), we get a palindrome (58788785).

The spelling of 42526261 in words is "forty-two million, five hundred twenty-six thousand, two hundred sixty-one".