102187397 has 8 divisors (see below), whose sum is σ = 111285720. Its totient is φ = 93265920.

The previous prime is 102187381. The next prime is 102187417. The reversal of 102187397 is 793781201.

It can be written as a sum of positive squares in 4 ways, for example, as 9084196 + 93103201 = 3014^2 + 9649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102187397 - 2⁴ = 102187381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102187397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102183397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43004 + ... + 45317.

It is an arithmetic number, because the mean of its divisors is an integer number (13910715).

Almost surely, 2^102187397 is an apocalyptic number.

It is an amenable number.

102187397 is a deficient number, since it is larger than the sum of its proper divisors (9098323).

102187397 is an equidigital number, since it uses as much as digits as its factorization.

102187397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88423.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 102187397 is about 10108.7782149971. The cubic root of 102187397 is about 467.5188351625.

The spelling of 102187397 in words is "one hundred two million, one hundred eighty-seven thousand, three hundred ninety-seven".