42030445 has 4 divisors (see below), whose sum is σ = 50436540. Its totient is φ = 33624352.

The previous prime is 42030437. The next prime is 42030473. The reversal of 42030445 is 54403024.

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 15342889 + 26687556 = 3917^2 + 5166^2 .

It is a cyclic number.

It is not a de Polignac number, because 42030445 - 2³ = 42030437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4203040 + ... + 4203049.

It is an arithmetic number, because the mean of its divisors is an integer number (12609135).

Almost surely, 2^42030445 is an apocalyptic number.

It is an amenable number.

42030445 is a deficient number, since it is larger than the sum of its proper divisors (8406095).

42030445 is an equidigital number, since it uses as much as digits as its factorization.

42030445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406094.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42030445 is about 6483.0891556418. The cubic root of 42030445 is about 347.6866343860.

Adding to 42030445 its reverse (54403024), we get a palindrome (96433469).

The spelling of 42030445 in words is "forty-two million, thirty thousand, four hundred forty-five".