142393826 has 4 divisors (see below), whose sum is σ = 213590742. Its totient is φ = 71196912.

The previous prime is 142393813. The next prime is 142393829. The reversal of 142393826 is 628393241.

142393826 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 139830625 + 2563201 = 11825^2 + 1601^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142393826.

It is not an unprimeable number, because it can be changed into a prime (142393829) 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 as a sum of consecutive naturals, namely, 35598455 + ... + 35598458.

Almost surely, 2^142393826 is an apocalyptic number.

142393826 is a deficient number, since it is larger than the sum of its proper divisors (71196916).

142393826 is an equidigital number, since it uses as much as digits as its factorization.

142393826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71196915.

The product of its digits is 62208, while the sum is 38.

The square root of 142393826 is about 11932.8884181492. Note that the first 3 decimals coincide. The cubic root of 142393826 is about 522.1922071745.

The spelling of 142393826 in words is "one hundred forty-two million, three hundred ninety-three thousand, eight hundred twenty-six".