4242309 has 8 divisors (see below), whose sum is σ = 5809440. Its totient is φ = 2751696.

The previous prime is 4242307. The next prime is 4242317. The reversal of 4242309 is 9032424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4242309 - 2¹ = 4242307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18999 + ... + 19220.

It is an arithmetic number, because the mean of its divisors is an integer number (726180).

Almost surely, 2^4242309 is an apocalyptic number.

It is an amenable number.

4242309 is a deficient number, since it is larger than the sum of its proper divisors (1567131).

4242309 is a wasteful number, since it uses less digits than its factorization.

4242309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38259.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4242309 is about 2059.6866266498. The cubic root of 4242309 is about 161.8828218320.

The spelling of 4242309 in words is "four million, two hundred forty-two thousand, three hundred nine".