20040244442 has 8 divisors (see below), whose sum is σ = 30509029056. Its totient is φ = 9870568092.

The previous prime is 20040244439. The next prime is 20040244447. The reversal of 20040244442 is 24444204002.

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

It is a super-2 number, since 2×20040244442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20040244447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74776898 + ... + 74777165.

It is an arithmetic number, because the mean of its divisors is an integer number (3813628632).

Almost surely, 2^20040244442 is an apocalyptic number.

20040244442 is a deficient number, since it is larger than the sum of its proper divisors (10468784614).

20040244442 is a wasteful number, since it uses less digits than its factorization.

20040244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149554132.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20040244442 its reverse (24444204002), we get a palindrome (44484448444).

The spelling of 20040244442 in words is "twenty billion, forty million, two hundred forty-four thousand, four hundred forty-two".