42249107 has 2 divisors, whose sum is σ = 42249108. Its totient is φ = 42249106.

The previous prime is 42249089. The next prime is 42249127. The reversal of 42249107 is 70194224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42249107 - 2⁶ = 42249043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42249107.

It is not a weakly prime, because it can be changed into another prime (42249127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21124553 + 21124554.

It is an arithmetic number, because the mean of its divisors is an integer number (21124554).

Almost surely, 2^42249107 is an apocalyptic number.

42249107 is a deficient number, since it is larger than the sum of its proper divisors (1).

42249107 is an equidigital number, since it uses as much as digits as its factorization.

42249107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 42249107 is about 6499.9313073293. The cubic root of 42249107 is about 348.2885345397.

It can be divided in two parts, 4224 and 9107, that added together give a palindrome (13331).

The spelling of 42249107 in words is "forty-two million, two hundred forty-nine thousand, one hundred seven".