42342523 has 4 divisors (see below), whose sum is σ = 43802640. Its totient is φ = 40882408.

The previous prime is 42342511. The next prime is 42342539. The reversal of 42342523 is 32524324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42342523 - 2⁵ = 42342491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42342323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730015 + ... + 730072.

It is an arithmetic number, because the mean of its divisors is an integer number (10950660).

Almost surely, 2^42342523 is an apocalyptic number.

42342523 is a deficient number, since it is larger than the sum of its proper divisors (1460117).

42342523 is a wasteful number, since it uses less digits than its factorization.

42342523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460116.

The product of its digits is 5760, while the sum is 25.

The square root of 42342523 is about 6507.1132616545. The cubic root of 42342523 is about 348.5450430895.

Adding to 42342523 its reverse (32524324), we get a palindrome (74866847).

The spelling of 42342523 in words is "forty-two million, three hundred forty-two thousand, five hundred twenty-three".