42242045 has 16 divisors (see below), whose sum is σ = 51565248. Its totient is φ = 33216000.

The previous prime is 42242033. The next prime is 42242047. The reversal of 42242045 is 54024224.

It is not a de Polignac number, because 42242045 - 2⁴ = 42242029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42242045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242047) 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, 121562 + ... + 121908.

It is an arithmetic number, because the mean of its divisors is an integer number (3222828).

Almost surely, 2^42242045 is an apocalyptic number.

It is an amenable number.

42242045 is a deficient number, since it is larger than the sum of its proper divisors (9323203).

42242045 is a wasteful number, since it uses less digits than its factorization.

42242045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 42242045 is about 6499.3880481165. The cubic root of 42242045 is about 348.2691278125.

Adding to 42242045 its reverse (54024224), we get a palindrome (96266269).

The spelling of 42242045 in words is "forty-two million, two hundred forty-two thousand, forty-five".