42030023 has 4 divisors (see below), whose sum is σ = 48034320. Its totient is φ = 36025728.

The previous prime is 42029989. The next prime is 42030031. The reversal of 42030023 is 32003024.

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

It is a cyclic number.

It is not a de Polignac number, because 42030023 - 2⁶ = 42029959 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 (42030623) 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, 3002138 + ... + 3002151.

It is an arithmetic number, because the mean of its divisors is an integer number (12008580).

Almost surely, 2^42030023 is an apocalyptic number.

42030023 is a deficient number, since it is larger than the sum of its proper divisors (6004297).

42030023 is an equidigital number, since it uses as much as digits as its factorization.

42030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004296.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 42030023 is about 6483.0566093472. The cubic root of 42030023 is about 347.6854707513.

Adding to 42030023 its reverse (32003024), we get a palindrome (74033047).

The spelling of 42030023 in words is "forty-two million, thirty thousand, twenty-three".