7102109 has 6 divisors (see below), whose sum is σ = 8261694. Its totient is φ = 6087480.

The previous prime is 7102103. The next prime is 7102127. The reversal of 7102109 is 9012017.

It can be written as a sum of positive squares in only one way, i.e., 4708900 + 2393209 = 2170^2 + 1547^2 .

It is not a de Polignac number, because 7102109 - 2⁴ = 7102093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7102103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72422 + ... + 72519.

It is an arithmetic number, because the mean of its divisors is an integer number (1376949).

Almost surely, 2^7102109 is an apocalyptic number.

It is an amenable number.

7102109 is a deficient number, since it is larger than the sum of its proper divisors (1159585).

7102109 is a wasteful number, since it uses less digits than its factorization.

7102109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144955 (or 144948 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 7102109 is about 2664.9782363089. The cubic root of 7102109 is about 192.2187628742.

The spelling of 7102109 in words is "seven million, one hundred two thousand, one hundred nine".