1423241009 has 2 divisors, whose sum is σ = 1423241010. Its totient is φ = 1423241008.

The previous prime is 1423240991. The next prime is 1423241023. The reversal of 1423241009 is 9001423241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 848440384 + 574800625 = 29128^2 + 23975^2 .

It is an emirp because it is prime and its reverse (9001423241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423241009 is a prime.

It is a super-2 number, since 2×1423241009² = 4051229939398676162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1423247009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711620504 + 711620505.

It is an arithmetic number, because the mean of its divisors is an integer number (711620505).

Almost surely, 2^1423241009 is an apocalyptic number.

It is an amenable number.

1423241009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423241009 is an equidigital number, since it uses as much as digits as its factorization.

1423241009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1423241009 is about 37725.8665771908. The cubic root of 1423241009 is about 1124.8453473665.

The spelling of 1423241009 in words is "one billion, four hundred twenty-three million, two hundred forty-one thousand, nine".