123035009 has 2 divisors, whose sum is σ = 123035010. Its totient is φ = 123035008.

The previous prime is 123034999. The next prime is 123035053. The reversal of 123035009 is 900530321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112954384 + 10080625 = 10628^2 + 3175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123035009 is a prime.

It is a super-2 number, since 2×123035009² = 30275226879260162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123035909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61517504 + 61517505.

It is an arithmetic number, because the mean of its divisors is an integer number (61517505).

Almost surely, 2^123035009 is an apocalyptic number.

It is an amenable number.

123035009 is a deficient number, since it is larger than the sum of its proper divisors (1).

123035009 is an equidigital number, since it uses as much as digits as its factorization.

123035009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 123035009 is about 11092.1147217291. The cubic root of 123035009 is about 497.3661621580.

The spelling of 123035009 in words is "one hundred twenty-three million, thirty-five thousand, nine".