42001244 has 6 divisors (see below), whose sum is σ = 73502184. Its totient is φ = 21000620.

The previous prime is 42001241. The next prime is 42001247. The reversal of 42001244 is 44210024.

It is an interprime number because it is at equal distance from previous prime (42001241) and next prime (42001247).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42001241) 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 as a sum of consecutive naturals, namely, 5250152 + ... + 5250159.

It is an arithmetic number, because the mean of its divisors is an integer number (12250364).

Almost surely, 2^42001244 is an apocalyptic number.

It is an amenable number.

42001244 is a deficient number, since it is larger than the sum of its proper divisors (31500940).

42001244 is a wasteful number, since it uses less digits than its factorization.

42001244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10500315 (or 10500313 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42001244 is about 6480.8366743809. The cubic root of 42001244 is about 347.6060963414.

Adding to 42001244 its reverse (44210024), we get a palindrome (86211268).

The spelling of 42001244 in words is "forty-two million, one thousand, two hundred forty-four".