1372109 has 2 divisors, whose sum is σ = 1372110. Its totient is φ = 1372108.

The previous prime is 1372103. The next prime is 1372127. The reversal of 1372109 is 9012731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 14884 = 1165^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372109 - 2¹² = 1368013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686054 + 686055.

It is an arithmetic number, because the mean of its divisors is an integer number (686055).

2^1372109 is an apocalyptic number.

It is an amenable number.

1372109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372109 is an equidigital number, since it uses as much as digits as its factorization.

1372109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1372109 is about 1171.3705647659. The cubic root of 1372109 is about 111.1210161911.

Subtracting from 1372109 its product of nonzero digits (378), we obtain a palindrome (1371731).

The spelling of 1372109 in words is "one million, three hundred seventy-two thousand, one hundred nine".