42771241 has 4 divisors (see below), whose sum is σ = 43814484. Its totient is φ = 41728000.

The previous prime is 42771233. The next prime is 42771247. The reversal of 42771241 is 14217724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4393216 + 38378025 = 2096^2 + 6195^2 .

It is a cyclic number.

It is not a de Polignac number, because 42771241 - 2³ = 42771233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42771247) 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 in 3 ways as a sum of consecutive naturals, for example, 521560 + ... + 521641.

It is an arithmetic number, because the mean of its divisors is an integer number (10953621).

Almost surely, 2^42771241 is an apocalyptic number.

42771241 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42771241 is a deficient number, since it is larger than the sum of its proper divisors (1043243).

42771241 is a wasteful number, since it uses less digits than its factorization.

42771241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043242.

The product of its digits is 3136, while the sum is 28.

The square root of 42771241 is about 6539.9725534592. The cubic root of 42771241 is about 349.7174345229.

Adding to 42771241 its reverse (14217724), we get a palindrome (56988965).

The spelling of 42771241 in words is "forty-two million, seven hundred seventy-one thousand, two hundred forty-one".