102699249 has 8 divisors (see below), whose sum is σ = 141349632. Its totient is φ = 66257520.

The previous prime is 102699241. The next prime is 102699253. The reversal of 102699249 is 942996201.

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

It is not a de Polignac number, because 102699249 - 2³ = 102699241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102699249.

It is not an unprimeable number, because it can be changed into a prime (102699241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552054 + ... + 552239.

It is an arithmetic number, because the mean of its divisors is an integer number (17668704).

Almost surely, 2^102699249 is an apocalyptic number.

It is an amenable number.

102699249 is a deficient number, since it is larger than the sum of its proper divisors (38650383).

102699249 is a wasteful number, since it uses less digits than its factorization.

102699249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104327.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 102699249 is about 10134.0637949443. The cubic root of 102699249 is about 468.2981289490.

The spelling of 102699249 in words is "one hundred two million, six hundred ninety-nine thousand, two hundred forty-nine".