180242287 has 2 divisors, whose sum is σ = 180242288. Its totient is φ = 180242286.

The previous prime is 180242267. The next prime is 180242297. The reversal of 180242287 is 782242081.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180242287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180242267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90121143 + 90121144.

It is an arithmetic number, because the mean of its divisors is an integer number (90121144).

Almost surely, 2^180242287 is an apocalyptic number.

180242287 is a deficient number, since it is larger than the sum of its proper divisors (1).

180242287 is an equidigital number, since it uses as much as digits as its factorization.

180242287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 180242287 is about 13425.4343318941. The cubic root of 180242287 is about 564.8748379658.

The spelling of 180242287 in words is "one hundred eighty million, two hundred forty-two thousand, two hundred eighty-seven".