854524942421 has 4 divisors (see below), whose sum is σ = 854535028512. Its totient is φ = 854514856332.

The previous prime is 854524942379. The next prime is 854524942457. The reversal of 854524942421 is 124249425458.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124249425458 = 2 ⋅62124712729.

It is a cyclic number.

It is not a de Polignac number, because 854524942421 - 2¹⁴ = 854524926037 is a prime.

It is a super-2 number, since 2×854524942421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 854524942421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854524942321) 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, 4914875 + ... + 5085768.

It is an arithmetic number, because the mean of its divisors is an integer number (213633757128).

Almost surely, 2^854524942421 is an apocalyptic number.

It is an amenable number.

854524942421 is a deficient number, since it is larger than the sum of its proper divisors (10086091).

854524942421 is a wasteful number, since it uses less digits than its factorization.

854524942421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10086090.

The product of its digits is 3686400, while the sum is 50.

The spelling of 854524942421 in words is "eight hundred fifty-four billion, five hundred twenty-four million, nine hundred forty-two thousand, four hundred twenty-one".