142255543 has 4 divisors (see below), whose sum is σ = 142380288. Its totient is φ = 142130800.

The previous prime is 142255501. The next prime is 142255577. The reversal of 142255543 is 345552241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345552241 = 79 ⋅4374079.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142255543 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142255583) 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, 60646 + ... + 62947.

It is an arithmetic number, because the mean of its divisors is an integer number (35595072).

Almost surely, 2^142255543 is an apocalyptic number.

142255543 is a deficient number, since it is larger than the sum of its proper divisors (124745).

142255543 is a wasteful number, since it uses less digits than its factorization.

142255543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124744.

The product of its digits is 24000, while the sum is 31.

The square root of 142255543 is about 11927.0928142612. The cubic root of 142255543 is about 522.0231134836.

It can be divided in two parts, 1422 and 55543, that added together give a palindrome (56965).

The spelling of 142255543 in words is "one hundred forty-two million, two hundred fifty-five thousand, five hundred forty-three".