1209123 has 12 divisors (see below), whose sum is σ = 1794208. Its totient is φ = 784080.

The previous prime is 1209121. The next prime is 1209139. The reversal of 1209123 is 3219021.

It is a happy number.

It is not a de Polignac number, because 1209123 - 2¹ = 1209121 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1209096 and 1209105.

It is not an unprimeable number, because it can be changed into a prime (1209121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1483 + ... + 2148.

2^1209123 is an apocalyptic number.

1209123 is a deficient number, since it is larger than the sum of its proper divisors (585085).

1209123 is a wasteful number, since it uses less digits than its factorization.

1209123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674 (or 3671 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1209123 is about 1099.6012913779. The cubic root of 1209123 is about 106.5344727391.

The spelling of 1209123 in words is "one million, two hundred nine thousand, one hundred twenty-three".