261342007 has 2 divisors, whose sum is σ = 261342008. Its totient is φ = 261342006.

The previous prime is 261342001. The next prime is 261342013. The reversal of 261342007 is 700243162.

It is a balanced prime because it is at equal distance from previous prime (261342001) and next prime (261342013).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261342007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261342001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130671003 + 130671004.

It is an arithmetic number, because the mean of its divisors is an integer number (130671004).

Almost surely, 2^261342007 is an apocalyptic number.

261342007 is a deficient number, since it is larger than the sum of its proper divisors (1).

261342007 is an equidigital number, since it uses as much as digits as its factorization.

261342007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 261342007 is about 16166.0758070720. The cubic root of 261342007 is about 639.3466697145.

Adding to 261342007 its reverse (700243162), we get a palindrome (961585169).

The spelling of 261342007 in words is "two hundred sixty-one million, three hundred forty-two thousand, seven".