142225543 has 4 divisors (see below), whose sum is σ = 142306920. Its totient is φ = 142144168.

The previous prime is 142225513. The next prime is 142225547. The reversal of 142225543 is 345522241.

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 142225543 - 2⁵ = 142225511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142225547) 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, 38008 + ... + 41581.

It is an arithmetic number, because the mean of its divisors is an integer number (35576730).

Almost surely, 2^142225543 is an apocalyptic number.

142225543 is a deficient number, since it is larger than the sum of its proper divisors (81377).

142225543 is an equidigital number, since it uses as much as digits as its factorization.

142225543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81376.

The product of its digits is 9600, while the sum is 28.

The square root of 142225543 is about 11925.8351070271. The cubic root of 142225543 is about 521.9864147509.

Adding to 142225543 its reverse (345522241), we get a palindrome (487747784).

The spelling of 142225543 in words is "one hundred forty-two million, two hundred twenty-five thousand, five hundred forty-three".