42177071 has 2 divisors, whose sum is σ = 42177072. Its totient is φ = 42177070.

The previous prime is 42177061. The next prime is 42177089. The reversal of 42177071 is 17077124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42177071 - 2⁶ = 42177007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42177061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21088535 + 21088536.

It is an arithmetic number, because the mean of its divisors is an integer number (21088536).

Almost surely, 2^42177071 is an apocalyptic number.

42177071 is a deficient number, since it is larger than the sum of its proper divisors (1).

42177071 is an equidigital number, since it uses as much as digits as its factorization.

42177071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 42177071 is about 6494.3876539671. The cubic root of 42177071 is about 348.0904744502.

The spelling of 42177071 in words is "forty-two million, one hundred seventy-seven thousand, seventy-one".