42641291 has 16 divisors (see below), whose sum is σ = 53699328. Its totient is φ = 32892000.

The previous prime is 42641239. The next prime is 42641327. The reversal of 42641291 is 19214624.

42641291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42641291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42641231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5036 + ... + 10518.

It is an arithmetic number, because the mean of its divisors is an integer number (3356208).

Almost surely, 2^42641291 is an apocalyptic number.

42641291 is a deficient number, since it is larger than the sum of its proper divisors (11058037).

42641291 is a wasteful number, since it uses less digits than its factorization.

42641291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602.

The product of its digits is 3456, while the sum is 29.

The square root of 42641291 is about 6530.0299386756. The cubic root of 42641291 is about 349.3628981357.

It can be divided in two parts, 4264 and 1291, that added together give a palindrome (5555).

The spelling of 42641291 in words is "forty-two million, six hundred forty-one thousand, two hundred ninety-one".