102375009 has 40 divisors (see below), whose sum is σ = 168838560. Its totient is φ = 61300800.

The previous prime is 102374917. The next prime is 102375043. The reversal of 102375009 is 900573201.

It is not a de Polignac number, because 102375009 - 2¹¹ = 102372961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102375109) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 78654 + ... + 79944.

It is an arithmetic number, because the mean of its divisors is an integer number (4220964).

Almost surely, 2^102375009 is an apocalyptic number.

It is an amenable number.

102375009 is a deficient number, since it is larger than the sum of its proper divisors (66463551).

102375009 is a wasteful number, since it uses less digits than its factorization.

102375009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 102375009 is about 10118.0536171736. The cubic root of 102375009 is about 467.8047755762.

The spelling of 102375009 in words is "one hundred two million, three hundred seventy-five thousand, nine".