142493843 has 4 divisors (see below), whose sum is σ = 143217360. Its totient is φ = 141770328.

The previous prime is 142493797. The next prime is 142493851. The reversal of 142493843 is 348394241.

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 142493843 - 2⁸ = 142493587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142493797 and 142493806.

It is not an unprimeable number, because it can be changed into a prime (142493893) 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, 361463 + ... + 361856.

It is an arithmetic number, because the mean of its divisors is an integer number (35804340).

Almost surely, 2^142493843 is an apocalyptic number.

142493843 is a deficient number, since it is larger than the sum of its proper divisors (723517).

142493843 is an equidigital number, since it uses as much as digits as its factorization.

142493843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723516.

The product of its digits is 82944, while the sum is 38.

The square root of 142493843 is about 11937.0784951763. The cubic root of 142493843 is about 522.3144406447.

The spelling of 142493843 in words is "one hundred forty-two million, four hundred ninety-three thousand, eight hundred forty-three".