21374335274242 has 8 divisors (see below), whose sum is σ = 32587101319932. Its totient is φ = 10511968167600.

The previous prime is 21374335274197. The next prime is 21374335274267. The reversal of 21374335274242 is 24247253347312.

It can be written as a sum of positive squares in 2 ways, for example, as 17169329800921 + 4205005473321 = 4143589^2 + 2050611^2 .

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

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, 87599734609 + ... + 87599734852.

Almost surely, 2^{21374335274242} is an apocalyptic number.

21374335274242 is a deficient number, since it is larger than the sum of its proper divisors (11212766045690).

21374335274242 is a wasteful number, since it uses less digits than its factorization.

21374335274242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175199469524.

The product of its digits is 6773760, while the sum is 49.

The spelling of 21374335274242 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-five million, two hundred seventy-four thousand, two hundred forty-two".