7124009 has 2 divisors, whose sum is σ = 7124010. Its totient is φ = 7124008.

The previous prime is 7123981. The next prime is 7124023. The reversal of 7124009 is 9004217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 595984 = 2555^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 7124009 - 2¹⁶ = 7058473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7124099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3562004 + 3562005.

It is an arithmetic number, because the mean of its divisors is an integer number (3562005).

Almost surely, 2^7124009 is an apocalyptic number.

It is an amenable number.

7124009 is a deficient number, since it is larger than the sum of its proper divisors (1).

7124009 is an equidigital number, since it uses as much as digits as its factorization.

7124009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 7124009 is about 2669.0839252448. The cubic root of 7124009 is about 192.4161348294.

The spelling of 7124009 in words is "seven million, one hundred twenty-four thousand, nine".