102125287 has 4 divisors (see below), whose sum is σ = 111409416. Its totient is φ = 92841160.

The previous prime is 102125281. The next prime is 102125293. The reversal of 102125287 is 782521201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (102125281) and next prime (102125293).

It is a cyclic number.

It is not a de Polignac number, because 102125287 - 2³ = 102125279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102125281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4642048 + ... + 4642069.

It is an arithmetic number, because the mean of its divisors is an integer number (27852354).

Almost surely, 2^102125287 is an apocalyptic number.

102125287 is a deficient number, since it is larger than the sum of its proper divisors (9284129).

102125287 is an equidigital number, since it uses as much as digits as its factorization.

102125287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9284128.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 102125287 is about 10105.7056656129. The cubic root of 102125287 is about 467.4240958869.

Adding to 102125287 its reverse (782521201), we get a palindrome (884646488).

The spelling of 102125287 in words is "one hundred two million, one hundred twenty-five thousand, two hundred eighty-seven".