142454273 has 4 divisors (see below), whose sum is σ = 153412308. Its totient is φ = 131496240.

The previous prime is 142454251. The next prime is 142454309. The reversal of 142454273 is 372454241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47430769 + 95023504 = 6887^2 + 9748^2 .

It is a cyclic number.

It is not a de Polignac number, because 142454273 - 2⁸ = 142454017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142454233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5478998 + ... + 5479023.

It is an arithmetic number, because the mean of its divisors is an integer number (38353077).

Almost surely, 2^142454273 is an apocalyptic number.

142454273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142454273 is a deficient number, since it is larger than the sum of its proper divisors (10958035).

142454273 is a wasteful number, since it uses less digits than its factorization.

142454273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10958034.

The product of its digits is 26880, while the sum is 32.

The square root of 142454273 is about 11935.4209393720. The cubic root of 142454273 is about 522.2660879220.

Subtracting from 142454273 its sum of digits (32), we obtain a palindrome (142454241).

The spelling of 142454273 in words is "one hundred forty-two million, four hundred fifty-four thousand, two hundred seventy-three".