21374264171242 has 8 divisors (see below), whose sum is σ = 32061577755456. Its totient is φ = 10687071586092.

The previous prime is 21374264171171. The next prime is 21374264171269. The reversal of 21374264171242 is 24217146247312.

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

It is a super-2 number, since 2×21374264171242² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21374264171192 and 21374264171201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29806848 + ... + 30515515.

It is an arithmetic number, because the mean of its divisors is an integer number (4007697219432).

Almost surely, 2^{21374264171242} is an apocalyptic number.

21374264171242 is a deficient number, since it is larger than the sum of its proper divisors (10687313584214).

21374264171242 is a wasteful number, since it uses less digits than its factorization.

21374264171242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60499532.

The product of its digits is 903168, while the sum is 46.

The spelling of 21374264171242 in words is "twenty-one trillion, three hundred seventy-four billion, two hundred sixty-four million, one hundred seventy-one thousand, two hundred forty-two".