42003023 has 2 divisors, whose sum is σ = 42003024. Its totient is φ = 42003022.

The previous prime is 42002999. The next prime is 42003061. The reversal of 42003023 is 32030024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42003023 - 2¹⁸ = 41740879 is a prime.

It is a super-2 number, since 2×42003023² = 3528507882277058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42002989 and 42003007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42003323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001511 + 21001512.

It is an arithmetic number, because the mean of its divisors is an integer number (21001512).

Almost surely, 2^42003023 is an apocalyptic number.

42003023 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003023 is an equidigital number, since it uses as much as digits as its factorization.

42003023 is an evil number, because the sum of its binary digits is even.

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

The square root of 42003023 is about 6480.9739237247. The cubic root of 42003023 is about 347.6110039938.

Adding to 42003023 its reverse (32030024), we get a palindrome (74033047).

The spelling of 42003023 in words is "forty-two million, three thousand, twenty-three".