4400402042 has 4 divisors (see below), whose sum is σ = 6600603066. Its totient is φ = 2200201020.

The previous prime is 4400402023. The next prime is 4400402047. The reversal of 4400402042 is 2402040044.

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

It can be written as a sum of positive squares in only one way, i.e., 3975176401 + 425225641 = 63049^2 + 20621^2 .

It is not an unprimeable number, because it can be changed into a prime (4400402047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100100509 + ... + 1100100512.

Almost surely, 2^4400402042 is an apocalyptic number.

4400402042 is a deficient number, since it is larger than the sum of its proper divisors (2200201024).

4400402042 is a wasteful number, since it uses less digits than its factorization.

4400402042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200201023.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4400402042 is about 66335.5262434843. The cubic root of 4400402042 is about 1638.6924490089.

Adding to 4400402042 its reverse (2402040044), we get a palindrome (6802442086).

The spelling of 4400402042 in words is "four billion, four hundred million, four hundred two thousand, forty-two".