42501023 has 2 divisors, whose sum is σ = 42501024. Its totient is φ = 42501022.

The previous prime is 42501013. The next prime is 42501047. The reversal of 42501023 is 32010524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42501023 - 2⁴ = 42501007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42500992 and 42501010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42501013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21250511 + 21250512.

It is an arithmetic number, because the mean of its divisors is an integer number (21250512).

Almost surely, 2^42501023 is an apocalyptic number.

42501023 is a deficient number, since it is larger than the sum of its proper divisors (1).

42501023 is an equidigital number, since it uses as much as digits as its factorization.

42501023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42501023 is about 6519.2808652489. The cubic root of 42501023 is about 348.9794023470.

Adding to 42501023 its reverse (32010524), we get a palindrome (74511547).

The spelling of 42501023 in words is "forty-two million, five hundred one thousand, twenty-three".