42153445 has 4 divisors (see below), whose sum is σ = 50584140. Its totient is φ = 33722752.

The previous prime is 42153439. The next prime is 42153451. The reversal of 42153445 is 54435124.

42153445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42153439) and next prime (42153451).

It can be written as a sum of positive squares in 2 ways, for example, as 21659716 + 20493729 = 4654^2 + 4527^2 .

It is a cyclic number.

It is not a de Polignac number, because 42153445 - 2⁵ = 42153413 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 3 ways as a sum of consecutive naturals, for example, 4215340 + ... + 4215349.

It is an arithmetic number, because the mean of its divisors is an integer number (12646035).

Almost surely, 2^42153445 is an apocalyptic number.

It is an amenable number.

42153445 is a deficient number, since it is larger than the sum of its proper divisors (8430695).

42153445 is an equidigital number, since it uses as much as digits as its factorization.

42153445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8430694.

The product of its digits is 9600, while the sum is 28.

The square root of 42153445 is about 6492.5684439981. The cubic root of 42153445 is about 348.0254666042.

Adding to 42153445 its reverse (54435124), we get a palindrome (96588569).

The spelling of 42153445 in words is "forty-two million, one hundred fifty-three thousand, four hundred forty-five".