142557223 has 4 divisors (see below), whose sum is σ = 150942960. Its totient is φ = 134171488.

The previous prime is 142557199. The next prime is 142557241. The reversal of 142557223 is 322755241.

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 142557223 - 2¹³ = 142549031 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 (142557293) 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, 4192843 + ... + 4192876.

It is an arithmetic number, because the mean of its divisors is an integer number (37735740).

Almost surely, 2^142557223 is an apocalyptic number.

142557223 is a deficient number, since it is larger than the sum of its proper divisors (8385737).

142557223 is an equidigital number, since it uses as much as digits as its factorization.

142557223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8385736.

The product of its digits is 16800, while the sum is 31.

The square root of 142557223 is about 11939.7329534626. The cubic root of 142557223 is about 522.3918694459.

The spelling of 142557223 in words is "one hundred forty-two million, five hundred fifty-seven thousand, two hundred twenty-three".