42061577 has 2 divisors, whose sum is σ = 42061578. Its totient is φ = 42061576.

The previous prime is 42061559. The next prime is 42061589. The reversal of 42061577 is 77516024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42042256 + 19321 = 6484^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 42061577 - 2⁸ = 42061321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42061597) 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, 21030788 + 21030789.

It is an arithmetic number, because the mean of its divisors is an integer number (21030789).

Almost surely, 2^42061577 is an apocalyptic number.

It is an amenable number.

42061577 is a deficient number, since it is larger than the sum of its proper divisors (1).

42061577 is an equidigital number, since it uses as much as digits as its factorization.

42061577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 42061577 is about 6485.4897270754. The cubic root of 42061577 is about 347.7724571660.

The spelling of 42061577 in words is "forty-two million, sixty-one thousand, five hundred seventy-seven".