42734449 has 2 divisors, whose sum is σ = 42734450. Its totient is φ = 42734448.

The previous prime is 42734407. The next prime is 42734479. The reversal of 42734449 is 94443724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42706225 + 28224 = 6535^2 + 168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42734449 is a prime.

It is not a weakly prime, because it can be changed into another prime (42734479) 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, 21367224 + 21367225.

It is an arithmetic number, because the mean of its divisors is an integer number (21367225).

Almost surely, 2^42734449 is an apocalyptic number.

It is an amenable number.

42734449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42734449 is an equidigital number, since it uses as much as digits as its factorization.

42734449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 37.

The square root of 42734449 is about 6537.1590924499. The cubic root of 42734449 is about 349.6171296243.

The spelling of 42734449 in words is "forty-two million, seven hundred thirty-four thousand, four hundred forty-nine".