207442987 has 2 divisors, whose sum is σ = 207442988. Its totient is φ = 207442986.

The previous prime is 207442889. The next prime is 207443017. The reversal of 207442987 is 789244702.

207442987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207442987 is a prime.

It is not a weakly prime, because it can be changed into another prime (207442087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103721493 + 103721494.

It is an arithmetic number, because the mean of its divisors is an integer number (103721494).

Almost surely, 2^207442987 is an apocalyptic number.

207442987 is a deficient number, since it is larger than the sum of its proper divisors (1).

207442987 is an equidigital number, since it uses as much as digits as its factorization.

207442987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 207442987 is about 14402.8812048145. The cubic root of 207442987 is about 591.9698470079.

The spelling of 207442987 in words is "two hundred seven million, four hundred forty-two thousand, nine hundred eighty-seven".