42500023 has 2 divisors, whose sum is σ = 42500024. Its totient is φ = 42500022.

The previous prime is 42499999. The next prime is 42500027. The reversal of 42500023 is 32000524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42500023 - 2⁵ = 42499991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42500027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21250011 + 21250012.

It is an arithmetic number, because the mean of its divisors is an integer number (21250012).

Almost surely, 2^42500023 is an apocalyptic number.

42500023 is a deficient number, since it is larger than the sum of its proper divisors (1).

42500023 is an equidigital number, since it uses as much as digits as its factorization.

42500023 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 16.

The square root of 42500023 is about 6519.2041692219. The cubic root of 42500023 is about 348.9766652981.

Adding to 42500023 its reverse (32000524), we get a palindrome (74500547).

The spelling of 42500023 in words is "forty-two million, five hundred thousand, twenty-three".