8028102421 has 2 divisors, whose sum is σ = 8028102422. Its totient is φ = 8028102420.

The previous prime is 8028102353. The next prime is 8028102427. The reversal of 8028102421 is 1242018208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6886676196 + 1141426225 = 82986^2 + 33785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8028102421 is a prime.

It is a super-2 number, since 2×8028102421² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8028102421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8028102427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4014051210 + 4014051211.

It is an arithmetic number, because the mean of its divisors is an integer number (4014051211).

Almost surely, 2^8028102421 is an apocalyptic number.

It is an amenable number.

8028102421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8028102421 is an equidigital number, since it uses as much as digits as its factorization.

8028102421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 8028102421 is about 89599.6786880399. The cubic root of 8028102421 is about 2002.3391315818.

The spelling of 8028102421 in words is "eight billion, twenty-eight million, one hundred two thousand, four hundred twenty-one".