44142641 has 4 divisors (see below), whose sum is σ = 44156784. Its totient is φ = 44128500.

The previous prime is 44142629. The next prime is 44142649. The reversal of 44142641 is 14624144.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44142641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44142641.

It is not an unprimeable number, because it can be changed into a prime (44142649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95 + ... + 9396.

It is an arithmetic number, because the mean of its divisors is an integer number (11039196).

Almost surely, 2^44142641 is an apocalyptic number.

It is an amenable number.

44142641 is a deficient number, since it is larger than the sum of its proper divisors (14143).

44142641 is an equidigital number, since it uses as much as digits as its factorization.

44142641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14142.

The product of its digits is 3072, while the sum is 26.

The square root of 44142641 is about 6643.9928506885. The cubic root of 44142641 is about 353.4159162808.

Adding to 44142641 its reverse (14624144), we get a palindrome (58766785).

The spelling of 44142641 in words is "forty-four million, one hundred forty-two thousand, six hundred forty-one".