42306449 has 2 divisors, whose sum is σ = 42306450. Its totient is φ = 42306448.

The previous prime is 42306401. The next prime is 42306461. The reversal of 42306449 is 94460324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37761025 + 4545424 = 6145^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 42306449 - 2²⁴ = 25529233 is a prime.

It is not a weakly prime, because it can be changed into another prime (42306469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21153224 + 21153225.

It is an arithmetic number, because the mean of its divisors is an integer number (21153225).

Almost surely, 2^42306449 is an apocalyptic number.

It is an amenable number.

42306449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42306449 is an equidigital number, since it uses as much as digits as its factorization.

42306449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 42306449 is about 6504.3407813552. The cubic root of 42306449 is about 348.4460331947.

The spelling of 42306449 in words is "forty-two million, three hundred six thousand, four hundred forty-nine".