102299987 has 2 divisors, whose sum is σ = 102299988. Its totient is φ = 102299986.

The previous prime is 102299963. The next prime is 102300001. The reversal of 102299987 is 789992201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102299987 - 2¹² = 102295891 is a prime.

It is not a weakly prime, because it can be changed into another prime (102299947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51149993 + 51149994.

It is an arithmetic number, because the mean of its divisors is an integer number (51149994).

Almost surely, 2^102299987 is an apocalyptic number.

102299987 is a deficient number, since it is larger than the sum of its proper divisors (1).

102299987 is an equidigital number, since it uses as much as digits as its factorization.

102299987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 102299987 is about 10114.3456041407. The cubic root of 102299987 is about 467.6904761113.

The spelling of 102299987 in words is "one hundred two million, two hundred ninety-nine thousand, nine hundred eighty-seven".