42553123 has 8 divisors (see below), whose sum is σ = 43171920. Its totient is φ = 41939040.

The previous prime is 42553109. The next prime is 42553127. The reversal of 42553123 is 32135524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42553123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42553127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19533 + ... + 21601.

It is an arithmetic number, because the mean of its divisors is an integer number (5396490).

Almost surely, 2^42553123 is an apocalyptic number.

42553123 is a deficient number, since it is larger than the sum of its proper divisors (618797).

42553123 is a wasteful number, since it uses less digits than its factorization.

42553123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357.

The product of its digits is 3600, while the sum is 25.

The square root of 42553123 is about 6523.2754809221. The cubic root of 42553123 is about 349.1219432493.

Adding to 42553123 its reverse (32135524), we get a palindrome (74688647).

The spelling of 42553123 in words is "forty-two million, five hundred fifty-three thousand, one hundred twenty-three".