42144541 has 4 divisors (see below), whose sum is σ = 42773632. Its totient is φ = 41515452.

The previous prime is 42144539. The next prime is 42144551. The reversal of 42144541 is 14544124.

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 a cyclic number.

It is not a de Polignac number, because 42144541 - 2¹ = 42144539 is a prime.

It is a super-2 number, since 2×42144541² = 3552324672201362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42144521) 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, 314445 + ... + 314578.

It is an arithmetic number, because the mean of its divisors is an integer number (10693408).

Almost surely, 2^42144541 is an apocalyptic number.

It is an amenable number.

42144541 is a deficient number, since it is larger than the sum of its proper divisors (629091).

42144541 is an equidigital number, since it uses as much as digits as its factorization.

42144541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629090.

The product of its digits is 2560, while the sum is 25.

The square root of 42144541 is about 6491.8827007271. The cubic root of 42144541 is about 348.0009606042. Note that the first 3 decimals are identical.

Adding to 42144541 its reverse (14544124), we get a palindrome (56688665).

The spelling of 42144541 in words is "forty-two million, one hundred forty-four thousand, five hundred forty-one".