5042509 has 4 divisors (see below), whose sum is σ = 5049216. Its totient is φ = 5035804.

The previous prime is 5042507. The next prime is 5042539. The reversal of 5042509 is 9052405.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9052405 = 5 ⋅1810481.

It is a cyclic number.

It is not a de Polignac number, because 5042509 - 2¹ = 5042507 is a prime.

It is a Duffinian number.

5042509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5042507) 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, 2059 + ... + 3784.

It is an arithmetic number, because the mean of its divisors is an integer number (1262304).

Almost surely, 2^5042509 is an apocalyptic number.

It is an amenable number.

5042509 is a deficient number, since it is larger than the sum of its proper divisors (6707).

5042509 is an equidigital number, since it uses as much as digits as its factorization.

5042509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 5042509 is about 2245.5531612500. The cubic root of 5042509 is about 171.4808235889.

The spelling of 5042509 in words is "five million, forty-two thousand, five hundred nine".