42401441 has 4 divisors (see below), whose sum is σ = 42432192. Its totient is φ = 42370692.

The previous prime is 42401423. The next prime is 42401449. The reversal of 42401441 is 14410424.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-42401441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42401449) 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, 13205 + ... + 16098.

It is an arithmetic number, because the mean of its divisors is an integer number (10608048).

Almost surely, 2^42401441 is an apocalyptic number.

It is an amenable number.

42401441 is a deficient number, since it is larger than the sum of its proper divisors (30751).

42401441 is a wasteful number, since it uses less digits than its factorization.

42401441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30750.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 42401441 is about 6511.6388874077. The cubic root of 42401441 is about 348.7066305272.

Adding to 42401441 its reverse (14410424), we get a palindrome (56811865).

The spelling of 42401441 in words is "forty-two million, four hundred one thousand, four hundred forty-one".