20000440042 has 8 divisors (see below), whose sum is σ = 32727992832. Its totient is φ = 9091109100.

The previous prime is 20000440013. The next prime is 20000440043. The reversal of 20000440042 is 24004400002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20000439998 and 20000440025.

It is not an unprimeable number, because it can be changed into a prime (20000440043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454555434 + ... + 454555477.

It is an arithmetic number, because the mean of its divisors is an integer number (4090999104).

Almost surely, 2^20000440042 is an apocalyptic number.

20000440042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20000440042 is a deficient number, since it is larger than the sum of its proper divisors (12727552790).

20000440042 is a wasteful number, since it uses less digits than its factorization.

20000440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909110924.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20000440042 its reverse (24004400002), we get a palindrome (44004840044).

The spelling of 20000440042 in words is "twenty billion, four hundred forty thousand, forty-two".