4065542243 has 8 divisors (see below), whose sum is σ = 4665776640. Its totient is φ = 3470168520.

The previous prime is 4065542237. The next prime is 4065542249. The reversal of 4065542243 is 3422455604.

It is an interprime number because it is at equal distance from previous prime (4065542237) and next prime (4065542249).

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

It is a de Polignac number, because none of the positive numbers 2^k-4065542243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4065542249) 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, 1213373 + ... + 1216718.

It is an arithmetic number, because the mean of its divisors is an integer number (583222080).

Almost surely, 2^4065542243 is an apocalyptic number.

4065542243 is a deficient number, since it is larger than the sum of its proper divisors (600234397).

4065542243 is a wasteful number, since it uses less digits than its factorization.

4065542243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430337.

The product of its (nonzero) digits is 115200, while the sum is 35.

The square root of 4065542243 is about 63761.6047712101. The cubic root of 4065542243 is about 1596.0242754153.

Adding to 4065542243 its reverse (3422455604), we get a palindrome (7487997847).

The spelling of 4065542243 in words is "four billion, sixty-five million, five hundred forty-two thousand, two hundred forty-three".