21341134042 has 8 divisors (see below), whose sum is σ = 33894742356. Its totient is φ = 10042886592.

The previous prime is 21341134021. The next prime is 21341134069. The reversal of 21341134042 is 24043114312.

It can be written as a sum of positive squares in 2 ways, for example, as 21091462441 + 249671601 = 145229^2 + 15801^2 .

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

It is a super-2 number, since 2×21341134042² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21341133998 and 21341134016.

It is an unprimeable number.

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, 313840173 + ... + 313840240.

Almost surely, 2^21341134042 is an apocalyptic number.

21341134042 is a deficient number, since it is larger than the sum of its proper divisors (12553608314).

21341134042 is a wasteful number, since it uses less digits than its factorization.

21341134042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627680432.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21341134042 its reverse (24043114312), we get a palindrome (45384248354).

The spelling of 21341134042 in words is "twenty-one billion, three hundred forty-one million, one hundred thirty-four thousand, forty-two".