8512406421 has 8 divisors (see below), whose sum is σ = 11843348160. Its totient is φ = 5428201152.

The previous prime is 8512406359. The next prime is 8512406423. The reversal of 8512406421 is 1246042158.

It is a happy number.

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

It is not a de Polignac number, because 8512406421 - 2¹⁰ = 8512405397 is a prime.

It is a super-2 number, since 2×8512406421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8512406423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61684036 + ... + 61684173.

It is an arithmetic number, because the mean of its divisors is an integer number (1480418520).

Almost surely, 2^8512406421 is an apocalyptic number.

It is an amenable number.

8512406421 is a deficient number, since it is larger than the sum of its proper divisors (3330941739).

8512406421 is a wasteful number, since it uses less digits than its factorization.

8512406421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123368235.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 8512406421 is about 92262.7033042063. The cubic root of 8512406421 is about 2041.8199845754.

Adding to 8512406421 its reverse (1246042158), we get a palindrome (9758448579).

The spelling of 8512406421 in words is "eight billion, five hundred twelve million, four hundred six thousand, four hundred twenty-one".