4000242443 has 4 divisors (see below), whose sum is σ = 4235550840. Its totient is φ = 3764934048.

The previous prime is 4000242439. The next prime is 4000242451. The reversal of 4000242443 is 3442420004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000242443 - 2² = 4000242439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000242473) 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, 117654173 + ... + 117654206.

It is an arithmetic number, because the mean of its divisors is an integer number (1058887710).

Almost surely, 2^4000242443 is an apocalyptic number.

4000242443 is a deficient number, since it is larger than the sum of its proper divisors (235308397).

4000242443 is a wasteful number, since it uses less digits than its factorization.

4000242443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235308396.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 4000242443 is about 63247.4698545325. The cubic root of 4000242443 is about 1587.4331225097.

Adding to 4000242443 its reverse (3442420004), we get a palindrome (7442662447).

The spelling of 4000242443 in words is "four billion, two hundred forty-two thousand, four hundred forty-three".