80426429 has 2 divisors, whose sum is σ = 80426430. Its totient is φ = 80426428.

The previous prime is 80426407. The next prime is 80426491. The reversal of 80426429 is 92462408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65642404 + 14784025 = 8102^2 + 3845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80426429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80420429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40213214 + 40213215.

It is an arithmetic number, because the mean of its divisors is an integer number (40213215).

Almost surely, 2^80426429 is an apocalyptic number.

It is an amenable number.

80426429 is a deficient number, since it is larger than the sum of its proper divisors (1).

80426429 is an equidigital number, since it uses as much as digits as its factorization.

80426429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 80426429 is about 8968.0783337346. The cubic root of 80426429 is about 431.6511762470.

The spelling of 80426429 in words is "eighty million, four hundred twenty-six thousand, four hundred twenty-nine".