102849125 has 8 divisors (see below), whose sum is σ = 128355864. Its totient is φ = 82279200.

The previous prime is 102849083. The next prime is 102849127. The reversal of 102849125 is 521948201.

It can be written as a sum of positive squares in 4 ways, for example, as 2829124 + 100020001 = 1682^2 + 10001^2 .

It is not a de Polignac number, because 102849125 - 2¹⁰ = 102848101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102849091 and 102849100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102849127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411272 + ... + 411521.

It is an arithmetic number, because the mean of its divisors is an integer number (16044483).

Almost surely, 2^102849125 is an apocalyptic number.

It is an amenable number.

102849125 is a deficient number, since it is larger than the sum of its proper divisors (25506739).

102849125 is an frugal number, since it uses more digits than its factorization.

102849125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822808 (or 822798 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 102849125 is about 10141.4557633507. The cubic root of 102849125 is about 468.5258246592.

The spelling of 102849125 in words is "one hundred two million, eight hundred forty-nine thousand, one hundred twenty-five".