42500045 has 16 divisors (see below), whose sum is σ = 58631040. Its totient is φ = 28970304.

The previous prime is 42500033. The next prime is 42500047. The reversal of 42500045 is 54000524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42500045 - 2¹⁰ = 42499021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42500047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2546 + ... + 9564.

It is an arithmetic number, because the mean of its divisors is an integer number (3664440).

Almost surely, 2^42500045 is an apocalyptic number.

It is an amenable number.

42500045 is a deficient number, since it is larger than the sum of its proper divisors (16130995).

42500045 is a wasteful number, since it uses less digits than its factorization.

42500045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 42500045 is about 6519.2058565442. The cubic root of 42500045 is about 348.9767255136.

Adding to 42500045 its reverse (54000524), we get a palindrome (96500569).

The spelling of 42500045 in words is "forty-two million, five hundred thousand, forty-five".