42105244 has 12 divisors (see below), whose sum is σ = 73750824. Its totient is φ = 21033584.

The previous prime is 42105229. The next prime is 42105247. The reversal of 42105244 is 44250124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42105247) 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, 987 + ... + 9229.

It is an arithmetic number, because the mean of its divisors is an integer number (6145902).

Almost surely, 2^42105244 is an apocalyptic number.

It is an amenable number.

42105244 is a deficient number, since it is larger than the sum of its proper divisors (31645580).

42105244 is a wasteful number, since it uses less digits than its factorization.

42105244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524 (or 9522 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 42105244 is about 6488.8553690154. The cubic root of 42105244 is about 347.8927643341.

Adding to 42105244 its reverse (44250124), we get a palindrome (86355368).

The spelling of 42105244 in words is "forty-two million, one hundred five thousand, two hundred forty-four".