42150445 has 4 divisors (see below), whose sum is σ = 50580540. Its totient is φ = 33720352.

The previous prime is 42150439. The next prime is 42150457. The reversal of 42150445 is 54405124.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18003049 + 24147396 = 4243^2 + 4914^2 .

It is a cyclic number.

It is not a de Polignac number, because 42150445 - 2⁵ = 42150413 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4215040 + ... + 4215049.

It is an arithmetic number, because the mean of its divisors is an integer number (12645135).

Almost surely, 2^42150445 is an apocalyptic number.

It is an amenable number.

42150445 is a deficient number, since it is larger than the sum of its proper divisors (8430095).

42150445 is an equidigital number, since it uses as much as digits as its factorization.

42150445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8430094.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 42150445 is about 6492.3374065124. The cubic root of 42150445 is about 348.0172102512.

Adding to 42150445 its reverse (54405124), we get a palindrome (96555569).

The spelling of 42150445 in words is "forty-two million, one hundred fifty thousand, four hundred forty-five".