102148857 has 20 divisors (see below), whose sum is σ = 154177716. Its totient is φ = 67392000.

The previous prime is 102148853. The next prime is 102148859. The reversal of 102148857 is 758841201.

It can be written as a sum of positive squares in 2 ways, for example, as 17214201 + 84934656 = 4149^2 + 9216^2 .

It is not a de Polignac number, because 102148857 - 2² = 102148853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102148853) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1357 + ... + 14357.

Almost surely, 2^102148857 is an apocalyptic number.

It is an amenable number.

102148857 is a deficient number, since it is larger than the sum of its proper divisors (52028859).

102148857 is an equidigital number, since it uses as much as digits as its factorization.

102148857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13110 (or 13101 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 102148857 is about 10106.8717712258. The cubic root of 102148857 is about 467.4600528270.

The spelling of 102148857 in words is "one hundred two million, one hundred forty-eight thousand, eight hundred fifty-seven".