42523143 has 16 divisors (see below), whose sum is σ = 61605600. Its totient is φ = 25933824.

The previous prime is 42523139. The next prime is 42523147. The reversal of 42523143 is 34132524.

It is an interprime number because it is at equal distance from previous prime (42523139) and next prime (42523147).

It is not a de Polignac number, because 42523143 - 2² = 42523139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42523147) 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 in 15 ways as a sum of consecutive naturals, for example, 418 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (3850350).

Almost surely, 2^42523143 is an apocalyptic number.

42523143 is a deficient number, since it is larger than the sum of its proper divisors (19082457).

42523143 is a wasteful number, since it uses less digits than its factorization.

42523143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9778.

The product of its digits is 2880, while the sum is 24.

The square root of 42523143 is about 6520.9771507037. The cubic root of 42523143 is about 349.0399348943.

Adding to 42523143 its reverse (34132524), we get a palindrome (76655667).

The spelling of 42523143 in words is "forty-two million, five hundred twenty-three thousand, one hundred forty-three".