80142449 has 2 divisors, whose sum is σ = 80142450. Its totient is φ = 80142448.

The previous prime is 80142431. The next prime is 80142451. The reversal of 80142449 is 94424108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46676224 + 33466225 = 6832^2 + 5785^2 .

It is a cyclic number.

It is not a de Polignac number, because 80142449 - 2¹² = 80138353 is a prime.

Together with 80142451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80142479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40071224 + 40071225.

It is an arithmetic number, because the mean of its divisors is an integer number (40071225).

Almost surely, 2^80142449 is an apocalyptic number.

It is an amenable number.

80142449 is a deficient number, since it is larger than the sum of its proper divisors (1).

80142449 is an equidigital number, since it uses as much as digits as its factorization.

80142449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 80142449 is about 8952.2315095176. The cubic root of 80142449 is about 431.1425339166.

The spelling of 80142449 in words is "eighty million, one hundred forty-two thousand, four hundred forty-nine".