4200442809 has 4 divisors (see below), whose sum is σ = 5600590416. Its totient is φ = 2800295204.

The previous prime is 4200442789. The next prime is 4200442811. The reversal of 4200442809 is 9082440024.

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.

It is a cyclic number.

It is not a de Polignac number, because 4200442809 - 2²⁴ = 4183665593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4200442809.

It is not an unprimeable number, because it can be changed into a prime (4200442889) 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, 700073799 + ... + 700073804.

It is an arithmetic number, because the mean of its divisors is an integer number (1400147604).

Almost surely, 2^4200442809 is an apocalyptic number.

It is an amenable number.

4200442809 is a deficient number, since it is larger than the sum of its proper divisors (1400147607).

4200442809 is a wasteful number, since it uses less digits than its factorization.

4200442809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400147606.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 4200442809 is about 64810.8232396411. The cubic root of 4200442809 is about 1613.4853456768.

The spelling of 4200442809 in words is "four billion, two hundred million, four hundred forty-two thousand, eight hundred nine".