142193543 has 4 divisors (see below), whose sum is σ = 142479000. Its totient is φ = 141908088.

The previous prime is 142193537. The next prime is 142193551. The reversal of 142193543 is 345391241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345391241 = 13 ⋅26568557.

It is a cyclic number.

It is not a de Polignac number, because 142193543 - 2¹² = 142189447 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 (142193503) 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, 141980 + ... + 142977.

It is an arithmetic number, because the mean of its divisors is an integer number (35619750).

Almost surely, 2^142193543 is an apocalyptic number.

142193543 is a deficient number, since it is larger than the sum of its proper divisors (285457).

142193543 is an equidigital number, since it uses as much as digits as its factorization.

142193543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285456.

The product of its digits is 12960, while the sum is 32.

The square root of 142193543 is about 11924.4934064303. The cubic root of 142193543 is about 521.9472637475.

The spelling of 142193543 in words is "one hundred forty-two million, one hundred ninety-three thousand, five hundred forty-three".