21094059242 has 8 divisors (see below), whose sum is σ = 31641949632. Its totient is φ = 10546742700.

The previous prime is 21094059241. The next prime is 21094059251. The reversal of 21094059242 is 24295049012.

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

It is a super-2 number, since 2×21094059242² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21094059196 and 21094059205.

It is not an unprimeable number, because it can be changed into a prime (21094059241) 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, 35234 + ... + 208397.

It is an arithmetic number, because the mean of its divisors is an integer number (3955243704).

Almost surely, 2^21094059242 is an apocalyptic number.

21094059242 is a deficient number, since it is larger than the sum of its proper divisors (10547890390).

21094059242 is a wasteful number, since it uses less digits than its factorization.

21094059242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286924.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 21094059242 in words is "twenty-one billion, ninety-four million, fifty-nine thousand, two hundred forty-two".