20454144242 has 8 divisors (see below), whose sum is σ = 35064247296. Its totient is φ = 8766061812.

The previous prime is 20454144229. The next prime is 20454144287. The reversal of 20454144242 is 24244145402.

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 = 20454144199 and 20454144208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730505138 + ... + 730505165.

It is an arithmetic number, because the mean of its divisors is an integer number (4383030912).

Almost surely, 2^20454144242 is an apocalyptic number.

20454144242 is a deficient number, since it is larger than the sum of its proper divisors (14610103054).

20454144242 is a wasteful number, since it uses less digits than its factorization.

20454144242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461010312.

The product of its (nonzero) digits is 40960, while the sum is 32.

Adding to 20454144242 its reverse (24244145402), we get a palindrome (44698289644).

The spelling of 20454144242 in words is "twenty billion, four hundred fifty-four million, one hundred forty-four thousand, two hundred forty-two".