142039678493 has 4 divisors (see below), whose sum is σ = 145061799360. Its totient is φ = 139017557628.

The previous prime is 142039678483. The next prime is 142039678511. The reversal of 142039678493 is 394876930241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142039678493 - 2⁴ = 142039678477 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 (142039678423) 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, 1511060363 + ... + 1511060456.

It is an arithmetic number, because the mean of its divisors is an integer number (36265449840).

Almost surely, 2^142039678493 is an apocalyptic number.

It is an amenable number.

142039678493 is a deficient number, since it is larger than the sum of its proper divisors (3022120867).

142039678493 is an equidigital number, since it uses as much as digits as its factorization.

142039678493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022120866.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 142039678493 in words is "one hundred forty-two billion, thirty-nine million, six hundred seventy-eight thousand, four hundred ninety-three".