142224653 has 4 divisors (see below), whose sum is σ = 142278300. Its totient is φ = 142171008.

The previous prime is 142224647. The next prime is 142224697. The reversal of 142224653 is 356422241.

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 100260169 + 41964484 = 10013^2 + 6478^2 .

It is a cyclic number.

It is not a de Polignac number, because 142224653 - 2⁴ = 142224637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142224553) 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, 22628 + ... + 28221.

It is an arithmetic number, because the mean of its divisors is an integer number (35569575).

Almost surely, 2^142224653 is an apocalyptic number.

It is an amenable number.

142224653 is a deficient number, since it is larger than the sum of its proper divisors (53647).

142224653 is an equidigital number, since it uses as much as digits as its factorization.

142224653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53646.

The product of its digits is 11520, while the sum is 29.

The square root of 142224653 is about 11925.7977930200. The cubic root of 142224653 is about 521.9853259431.

Adding to 142224653 its reverse (356422241), we get a palindrome (498646894).

The spelling of 142224653 in words is "one hundred forty-two million, two hundred twenty-four thousand, six hundred fifty-three".