1233242009 has 4 divisors (see below), whose sum is σ = 1242952704. Its totient is φ = 1223531316.

The previous prime is 1233241973. The next prime is 1233242041. The reversal of 1233242009 is 9002423321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233242009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1293242009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855157 + ... + 4855410.

It is an arithmetic number, because the mean of its divisors is an integer number (310738176).

Almost surely, 2^1233242009 is an apocalyptic number.

It is an amenable number.

1233242009 is a deficient number, since it is larger than the sum of its proper divisors (9710695).

1233242009 is an equidigital number, since it uses as much as digits as its factorization.

1233242009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9710694.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1233242009 is about 35117.5456004545. The cubic root of 1233242009 is about 1072.3818048668.

The spelling of 1233242009 in words is "one billion, two hundred thirty-three million, two hundred forty-two thousand, nine".