42093977 has 2 divisors, whose sum is σ = 42093978. Its totient is φ = 42093976.

The previous prime is 42093967. The next prime is 42094007. The reversal of 42093977 is 77939024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41847961 + 246016 = 6469^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 42093977 - 2⁶ = 42093913 is a prime.

It is not a weakly prime, because it can be changed into another prime (42093967) 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, 21046988 + 21046989.

It is an arithmetic number, because the mean of its divisors is an integer number (21046989).

Almost surely, 2^42093977 is an apocalyptic number.

It is an amenable number.

42093977 is a deficient number, since it is larger than the sum of its proper divisors (1).

42093977 is an equidigital number, since it uses as much as digits as its factorization.

42093977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 42093977 is about 6487.9871300735. The cubic root of 42093977 is about 347.8617305318.

The spelling of 42093977 in words is "forty-two million, ninety-three thousand, nine hundred seventy-seven".