4001244243 has 32 divisors (see below), whose sum is σ = 5715021312. Its totient is φ = 2483923200.

The previous prime is 4001244229. The next prime is 4001244251. The reversal of 4001244243 is 3424421004.

It is a happy number.

It is not a de Polignac number, because 4001244243 - 2⁵ = 4001244211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4001244043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1614121 + ... + 1616597.

It is an arithmetic number, because the mean of its divisors is an integer number (178594416).

Almost surely, 2^4001244243 is an apocalyptic number.

4001244243 is a deficient number, since it is larger than the sum of its proper divisors (1713777069).

4001244243 is a wasteful number, since it uses less digits than its factorization.

4001244243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4001244243 is about 63255.3890431479. The cubic root of 4001244243 is about 1587.5656276256.

Adding to 4001244243 its reverse (3424421004), we get a palindrome (7425665247).

It can be divided in two parts, 40012 and 44243, that added together give a triangular number (84255 = T₄₁₀).

The spelling of 4001244243 in words is "four billion, one million, two hundred forty-four thousand, two hundred forty-three".