4124509 has 2 divisors, whose sum is σ = 4124510. Its totient is φ = 4124508.

The previous prime is 4124507. The next prime is 4124563. The reversal of 4124509 is 9054214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3080025 + 1044484 = 1755^2 + 1022^2 .

It is a cyclic number.

It is not a de Polignac number, because 4124509 - 2¹ = 4124507 is a prime.

Together with 4124507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4124503) 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, 2062254 + 2062255.

It is an arithmetic number, because the mean of its divisors is an integer number (2062255).

Almost surely, 2^4124509 is an apocalyptic number.

It is an amenable number.

4124509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4124509 is an equidigital number, since it uses as much as digits as its factorization.

4124509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 4124509 is about 2030.8887217177. Note that the first 3 decimals coincide. The cubic root of 4124509 is about 160.3703530176.

The spelling of 4124509 in words is "four million, one hundred twenty-four thousand, five hundred nine".