42312543 has 16 divisors (see below), whose sum is σ = 69436416. Its totient is φ = 22318560.

The previous prime is 42312539. The next prime is 42312553. The reversal of 42312543 is 34521324.

It is not a de Polignac number, because 42312543 - 2² = 42312539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77223 + ... + 77768.

It is an arithmetic number, because the mean of its divisors is an integer number (4339776).

Almost surely, 2^42312543 is an apocalyptic number.

42312543 is a deficient number, since it is larger than the sum of its proper divisors (27123873).

42312543 is a wasteful number, since it uses less digits than its factorization.

42312543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155014.

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

The square root of 42312543 is about 6504.8092208765. The cubic root of 42312543 is about 348.4627629387.

Adding to 42312543 its reverse (34521324), we get a palindrome (76833867).

The spelling of 42312543 in words is "forty-two million, three hundred twelve thousand, five hundred forty-three".