42421045 has 8 divisors (see below), whose sum is σ = 51247800. Its totient is φ = 33708480.

The previous prime is 42421037. The next prime is 42421063. The reversal of 42421045 is 54012424.

It is a happy number.

42421045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 508369 + 41912676 = 713^2 + 6474^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42421045 - 2³ = 42421037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27726 + ... + 29215.

It is an arithmetic number, because the mean of its divisors is an integer number (6405975).

Almost surely, 2^42421045 is an apocalyptic number.

It is an amenable number.

42421045 is a deficient number, since it is larger than the sum of its proper divisors (8826755).

42421045 is a wasteful number, since it uses less digits than its factorization.

42421045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57095.

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

The square root of 42421045 is about 6513.1440180607. The cubic root of 42421045 is about 348.7603629111.

Adding to 42421045 its reverse (54012424), we get a palindrome (96433469).

The spelling of 42421045 in words is "forty-two million, four hundred twenty-one thousand, forty-five".