142124404393 has 4 divisors (see below), whose sum is σ = 142297516548. Its totient is φ = 141951292240.

The previous prime is 142124404381. The next prime is 142124404451. The reversal of 142124404393 is 393404421241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393404421241 = 13 ⋅30261878557.

It can be written as a sum of positive squares in 2 ways, for example, as 36845570304 + 105278834089 = 191952^2 + 324467^2 .

It is a cyclic number.

It is not a de Polignac number, because 142124404393 - 2³⁷ = 4685450921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142124404313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86554846 + ... + 86556487.

It is an arithmetic number, because the mean of its divisors is an integer number (35574379137).

Almost surely, 2^142124404393 is an apocalyptic number.

It is an amenable number.

142124404393 is a deficient number, since it is larger than the sum of its proper divisors (173112155).

142124404393 is an equidigital number, since it uses as much as digits as its factorization.

142124404393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173112154.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 142124404393 in words is "one hundred forty-two billion, one hundred twenty-four million, four hundred four thousand, three hundred ninety-three".