42055717 has 16 divisors (see below), whose sum is σ = 47453184. Its totient is φ = 36936000.

The previous prime is 42055711. The next prime is 42055723. The reversal of 42055717 is 71755024.

It is an interprime number because it is at equal distance from previous prime (42055711) and next prime (42055723).

It is a cyclic number.

It is not a de Polignac number, because 42055717 - 2¹⁹ = 41531429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42055711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77467 + ... + 78007.

It is an arithmetic number, because the mean of its divisors is an integer number (2965824).

Almost surely, 2^42055717 is an apocalyptic number.

It is an amenable number.

42055717 is a deficient number, since it is larger than the sum of its proper divisors (5397467).

42055717 is a wasteful number, since it uses less digits than its factorization.

42055717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 42055717 is about 6485.0379335822. The cubic root of 42055717 is about 347.7563059152.

The spelling of 42055717 in words is "forty-two million, fifty-five thousand, seven hundred seventeen".