42401144 has 32 divisors (see below), whose sum is σ = 84741120. Its totient is φ = 19843296.

The previous prime is 42401143. The next prime is 42401153. The reversal of 42401144 is 44110424.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42401143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6197 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (2648160).

Almost surely, 2^42401144 is an apocalyptic number.

It is an amenable number.

42401144 is a deficient number, since it is larger than the sum of its proper divisors (42339976).

42401144 is a wasteful number, since it uses less digits than its factorization.

42401144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979 (or 4975 counting only the distinct ones).

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

The square root of 42401144 is about 6511.6160820491. The cubic root of 42401144 is about 348.7058163558.

Adding to 42401144 its reverse (44110424), we get a palindrome (86511568).

The spelling of 42401144 in words is "forty-two million, four hundred one thousand, one hundred forty-four".