4431426642 has 24 divisors (see below), whose sum is σ = 9646937040. Its totient is φ = 1470140280.

The previous prime is 4431426641. The next prime is 4431426647. The reversal of 4431426642 is 2466241344.

4431426642 is a `hidden beast` number, since 4 + 4 + 3 + 1 + 4 + 2 + 6 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4431426597 and 4431426606.

It is not an unprimeable number, because it can be changed into a prime (4431426641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579592 + ... + 587187.

It is an arithmetic number, because the mean of its divisors is an integer number (401955710).

Almost surely, 2^4431426642 is an apocalyptic number.

4431426642 is an abundant number, since it is smaller than the sum of its proper divisors (5215510398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4431426642 is a wasteful number, since it uses less digits than its factorization.

4431426642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166998 (or 1166995 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 4431426642 is about 66568.9615511614. The cubic root of 4431426642 is about 1642.5345800077.

Adding to 4431426642 its reverse (2466241344), we get a palindrome (6897667986).

The spelling of 4431426642 in words is "four billion, four hundred thirty-one million, four hundred twenty-six thousand, six hundred forty-two".