42271361 has 4 divisors (see below), whose sum is σ = 46114224. Its totient is φ = 38428500.

The previous prime is 42271349. The next prime is 42271363. The reversal of 42271361 is 16317224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42271361 - 2²² = 38077057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42271361.

It is not an unprimeable number, because it can be changed into a prime (42271363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1921415 + ... + 1921436.

It is an arithmetic number, because the mean of its divisors is an integer number (11528556).

Almost surely, 2^42271361 is an apocalyptic number.

It is an amenable number.

42271361 is a deficient number, since it is larger than the sum of its proper divisors (3842863).

42271361 is a wasteful number, since it uses less digits than its factorization.

42271361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842862.

The product of its digits is 2016, while the sum is 26.

The square root of 42271361 is about 6501.6429462098. The cubic root of 42271361 is about 348.3496754973.

Adding to 42271361 its reverse (16317224), we get a palindrome (58588585).

The spelling of 42271361 in words is "forty-two million, two hundred seventy-one thousand, three hundred sixty-one".