42945677 has 2 divisors, whose sum is σ = 42945678. Its totient is φ = 42945676.

The previous prime is 42945667. The next prime is 42945697. The reversal of 42945677 is 77654924.

42945677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41550916 + 1394761 = 6446^2 + 1181^2 .

It is a cyclic number.

It is not a de Polignac number, because 42945677 - 2⁸ = 42945421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42945667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21472838 + 21472839.

It is an arithmetic number, because the mean of its divisors is an integer number (21472839).

Almost surely, 2^42945677 is an apocalyptic number.

It is an amenable number.

42945677 is a deficient number, since it is larger than the sum of its proper divisors (1).

42945677 is an equidigital number, since it uses as much as digits as its factorization.

42945677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 42945677 is about 6553.2951253549. The cubic root of 42945677 is about 350.1922127887.

The spelling of 42945677 in words is "forty-two million, nine hundred forty-five thousand, six hundred seventy-seven".