1012261 has 2 divisors, whose sum is σ = 1012262. Its totient is φ = 1012260.

The previous prime is 1012259. The next prime is 1012267. The reversal of 1012261 is 1622101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012036 + 225 = 1006^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012261 - 2¹ = 1012259 is a prime.

Together with 1012259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506130 + 506131.

It is an arithmetic number, because the mean of its divisors is an integer number (506131).

2^1012261 is an apocalyptic number.

It is an amenable number.

1012261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012261 is an equidigital number, since it uses as much as digits as its factorization.

1012261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012261 is about 1006.1118228110. Note that the first 3 decimals coincide. The cubic root of 1012261 is about 100.4070409288.

Adding to 1012261 its reverse (1622101), we get a palindrome (2634362).

The spelling of 1012261 in words is "one million, twelve thousand, two hundred sixty-one".