21252462074 has 8 divisors (see below), whose sum is σ = 31879387488. Its totient is φ = 10625999580.

The previous prime is 21252462073. The next prime is 21252462131. The reversal of 21252462074 is 47026425212.

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 (21252462073) by changing a digit.

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, 42089 + ... + 210419.

It is an arithmetic number, because the mean of its divisors is an integer number (3984923436).

Almost surely, 2^21252462074 is an apocalyptic number.

21252462074 is a deficient number, since it is larger than the sum of its proper divisors (10626925414).

21252462074 is a wasteful number, since it uses less digits than its factorization.

21252462074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231460.

The product of its (nonzero) digits is 53760, while the sum is 35.

Adding to 21252462074 its reverse (47026425212), we get a palindrome (68278887286).

The spelling of 21252462074 in words is "twenty-one billion, two hundred fifty-two million, four hundred sixty-two thousand, seventy-four".