102107249 has 4 divisors (see below), whose sum is σ = 102468336. Its totient is φ = 101746164.

The previous prime is 102107237. The next prime is 102107303. The reversal of 102107249 is 942701201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 942701201 = 13 ⋅72515477.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102107249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102107549) 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, 180119 + ... + 180684.

It is an arithmetic number, because the mean of its divisors is an integer number (25617084).

Almost surely, 2^102107249 is an apocalyptic number.

It is an amenable number.

102107249 is a deficient number, since it is larger than the sum of its proper divisors (361087).

102107249 is an equidigital number, since it uses as much as digits as its factorization.

102107249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361086.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 102107249 is about 10104.8131600738. The cubic root of 102107249 is about 467.3965744879.

The spelling of 102107249 in words is "one hundred two million, one hundred seven thousand, two hundred forty-nine".