42448691 has 2 divisors, whose sum is σ = 42448692. Its totient is φ = 42448690.

The previous prime is 42448687. The next prime is 42448723. The reversal of 42448691 is 19684424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42448691 - 2² = 42448687 is a prime.

It is a super-2 number, since 2×42448691² = 3603782735226962, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42448621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21224345 + 21224346.

It is an arithmetic number, because the mean of its divisors is an integer number (21224346).

Almost surely, 2^42448691 is an apocalyptic number.

42448691 is a deficient number, since it is larger than the sum of its proper divisors (1).

42448691 is an equidigital number, since it uses as much as digits as its factorization.

42448691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 38.

The square root of 42448691 is about 6515.2659961048. The cubic root of 42448691 is about 348.8361093966.

The spelling of 42448691 in words is "forty-two million, four hundred forty-eight thousand, six hundred ninety-one".