262642361 has 2 divisors, whose sum is σ = 262642362. Its totient is φ = 262642360.

The previous prime is 262642337. The next prime is 262642363. The reversal of 262642361 is 163246262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246490000 + 16152361 = 15700^2 + 4019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262642361 is a prime.

Together with 262642363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (262642363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131321180 + 131321181.

It is an arithmetic number, because the mean of its divisors is an integer number (131321181).

Almost surely, 2^262642361 is an apocalyptic number.

It is an amenable number.

262642361 is a deficient number, since it is larger than the sum of its proper divisors (1).

262642361 is an equidigital number, since it uses as much as digits as its factorization.

262642361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 262642361 is about 16206.2445063624. The cubic root of 262642361 is about 640.4053104837.

The spelling of 262642361 in words is "two hundred sixty-two million, six hundred forty-two thousand, three hundred sixty-one".