80286421 has 2 divisors, whose sum is σ = 80286422. Its totient is φ = 80286420.

The previous prime is 80286407. The next prime is 80286443. The reversal of 80286421 is 12468208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57380625 + 22905796 = 7575^2 + 4786^2 .

It is a cyclic number.

It is not a de Polignac number, because 80286421 - 2¹⁵ = 80253653 is a prime.

It is equal to p_4685134 and since 80286421 and 4685134 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80286821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40143210 + 40143211.

It is an arithmetic number, because the mean of its divisors is an integer number (40143211).

Almost surely, 2^80286421 is an apocalyptic number.

It is an amenable number.

80286421 is a deficient number, since it is larger than the sum of its proper divisors (1).

80286421 is an equidigital number, since it uses as much as digits as its factorization.

80286421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 80286421 is about 8960.2690249791. The cubic root of 80286421 is about 431.4005549806.

The spelling of 80286421 in words is "eighty million, two hundred eighty-six thousand, four hundred twenty-one".