742510009 has 2 divisors, whose sum is σ = 742510010. Its totient is φ = 742510008.

The previous prime is 742509979. The next prime is 742510031. The reversal of 742510009 is 900015247.

It is a happy number.

742510009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 689220009 + 53290000 = 26253^2 + 7300^2 .

It is an emirp because it is prime and its reverse (900015247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 742510009 - 2²⁹ = 205639097 is a prime.

It is a super-2 number, since 2×742510009² = 1102642226930360162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (742510049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371255004 + 371255005.

It is an arithmetic number, because the mean of its divisors is an integer number (371255005).

Almost surely, 2^742510009 is an apocalyptic number.

It is an amenable number.

742510009 is a deficient number, since it is larger than the sum of its proper divisors (1).

742510009 is an equidigital number, since it uses as much as digits as its factorization.

742510009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 742510009 is about 27249.0368453639. The cubic root of 742510009 is about 905.5256793525.

The spelling of 742510009 in words is "seven hundred forty-two million, five hundred ten thousand, nine".