42048689 has 2 divisors, whose sum is σ = 42048690. Its totient is φ = 42048688.

The previous prime is 42048683. The next prime is 42048697. The reversal of 42048689 is 98684024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 16120225 = 5092^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 42048689 - 2¹² = 42044593 is a prime.

It is not a weakly prime, because it can be changed into another prime (42048683) 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, 21024344 + 21024345.

It is an arithmetic number, because the mean of its divisors is an integer number (21024345).

Almost surely, 2^42048689 is an apocalyptic number.

It is an amenable number.

42048689 is a deficient number, since it is larger than the sum of its proper divisors (1).

42048689 is an equidigital number, since it uses as much as digits as its factorization.

42048689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 42048689 is about 6484.4960482677. The cubic root of 42048689 is about 347.7369334600.

The spelling of 42048689 in words is "forty-two million, forty-eight thousand, six hundred eighty-nine".