42205771 has 8 divisors (see below), whose sum is σ = 42582960. Its totient is φ = 41830752.

The previous prime is 42205763. The next prime is 42205777. The reversal of 42205771 is 17750224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42205771 - 2³ = 42205763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42205777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82665 + ... + 83173.

It is an arithmetic number, because the mean of its divisors is an integer number (5322870).

Almost surely, 2^42205771 is an apocalyptic number.

42205771 is a deficient number, since it is larger than the sum of its proper divisors (377189).

42205771 is a wasteful number, since it uses less digits than its factorization.

42205771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 42205771 is about 6496.5968783664. The cubic root of 42205771 is about 348.1694109533.

Adding to 42205771 its reverse (17750224), we get a palindrome (59955995).

The spelling of 42205771 in words is "forty-two million, two hundred five thousand, seven hundred seventy-one".