42444545 has 64 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 26019840.

The previous prime is 42444539. The next prime is 42444547. The reversal of 42444545 is 54544424.

It is not a de Polignac number, because 42444545 - 2⁶ = 42444481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42444547) 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 in 63 ways as a sum of consecutive naturals, for example, 476861 + ... + 476949.

It is an arithmetic number, because the mean of its divisors is an integer number (1020600).

Almost surely, 2^42444545 is an apocalyptic number.

It is an amenable number.

42444545 is a deficient number, since it is larger than the sum of its proper divisors (22873855).

42444545 is a wasteful number, since it uses less digits than its factorization.

42444545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170.

The product of its digits is 51200, while the sum is 32.

The square root of 42444545 is about 6514.9478125308. The cubic root of 42444545 is about 348.8247519863.

Adding to 42444545 its reverse (54544424), we get a palindrome (96988969).

The spelling of 42444545 in words is "forty-two million, four hundred forty-four thousand, five hundred forty-five".