42030973 has 4 divisors (see below), whose sum is σ = 42464380. Its totient is φ = 41597568.

The previous prime is 42030971. The next prime is 42031039. The reversal of 42030973 is 37903024.

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 15539364 + 26491609 = 3942^2 + 5147^2 .

It is a cyclic number.

It is not a de Polignac number, because 42030973 - 2¹ = 42030971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42030971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216558 + ... + 216751.

It is an arithmetic number, because the mean of its divisors is an integer number (10616095).

Almost surely, 2^42030973 is an apocalyptic number.

It is an amenable number.

42030973 is a deficient number, since it is larger than the sum of its proper divisors (433407).

42030973 is an equidigital number, since it uses as much as digits as its factorization.

42030973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433406.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 42030973 is about 6483.1298768419. The cubic root of 42030973 is about 347.6880902971.

Adding to 42030973 its reverse (37903024), we get a palindrome (79933997).

The spelling of 42030973 in words is "forty-two million, thirty thousand, nine hundred seventy-three".