21454301042 has 8 divisors (see below), whose sum is σ = 32343168000. Its totient is φ = 10673245044.

The previous prime is 21454301021. The next prime is 21454301047. The reversal of 21454301042 is 24010345412.

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

It is not an unprimeable number, because it can be changed into a prime (21454301047) 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, 26952242 + ... + 26953037.

It is an arithmetic number, because the mean of its divisors is an integer number (4042896000).

Almost surely, 2^21454301042 is an apocalyptic number.

21454301042 is a deficient number, since it is larger than the sum of its proper divisors (10888866958).

21454301042 is a wasteful number, since it uses less digits than its factorization.

21454301042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53905480.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 21454301042 its reverse (24010345412), we get a palindrome (45464646454).

The spelling of 21454301042 in words is "twenty-one billion, four hundred fifty-four million, three hundred one thousand, forty-two".