42623143 has 2 divisors, whose sum is σ = 42623144. Its totient is φ = 42623142.

The previous prime is 42623123. The next prime is 42623153. The reversal of 42623143 is 34132624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42623143 - 2¹³ = 42614951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42623123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21311571 + 21311572.

It is an arithmetic number, because the mean of its divisors is an integer number (21311572).

Almost surely, 2^42623143 is an apocalyptic number.

42623143 is a deficient number, since it is larger than the sum of its proper divisors (1).

42623143 is an equidigital number, since it uses as much as digits as its factorization.

42623143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

The square root of 42623143 is about 6528.6402106411. The cubic root of 42623143 is about 349.3133285175.

Adding to 42623143 its reverse (34132624), we get a palindrome (76755767).

The spelling of 42623143 in words is "forty-two million, six hundred twenty-three thousand, one hundred forty-three".