42045677 has 2 divisors, whose sum is σ = 42045678. Its totient is φ = 42045676.

The previous prime is 42045671. The next prime is 42045697. The reversal of 42045677 is 77654024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34975396 + 7070281 = 5914^2 + 2659^2 .

It is a cyclic number.

It is not a de Polignac number, because 42045677 - 2¹² = 42041581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42045671) 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, 21022838 + 21022839.

It is an arithmetic number, because the mean of its divisors is an integer number (21022839).

Almost surely, 2^42045677 is an apocalyptic number.

It is an amenable number.

42045677 is a deficient number, since it is larger than the sum of its proper divisors (1).

42045677 is an equidigital number, since it uses as much as digits as its factorization.

42045677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 42045677 is about 6484.2637978417. The cubic root of 42045677 is about 347.7286303184.

The spelling of 42045677 in words is "forty-two million, forty-five thousand, six hundred seventy-seven".