4202020447 has 4 divisors (see below), whose sum is σ = 4203689776. Its totient is φ = 4200351120.

The previous prime is 4202020399. The next prime is 4202020481. The reversal of 4202020447 is 7440202024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4202020447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4202023447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830883 + ... + 835924.

It is an arithmetic number, because the mean of its divisors is an integer number (1050922444).

Almost surely, 2^4202020447 is an apocalyptic number.

4202020447 is a deficient number, since it is larger than the sum of its proper divisors (1669329).

4202020447 is a wasteful number, since it uses less digits than its factorization.

4202020447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669328.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 4202020447 is about 64822.9931968588. The cubic root of 4202020447 is about 1613.6873225707.

The spelling of 4202020447 in words is "four billion, two hundred two million, twenty thousand, four hundred forty-seven".