142478303 has 4 divisors (see below), whose sum is σ = 155430888. Its totient is φ = 129525720.

The previous prime is 142478299. The next prime is 142478339. The reversal of 142478303 is 303874241.

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 142478303 - 2² = 142478299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142478303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142478603) 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, 6476276 + ... + 6476297.

It is an arithmetic number, because the mean of its divisors is an integer number (38857722).

Almost surely, 2^142478303 is an apocalyptic number.

142478303 is a deficient number, since it is larger than the sum of its proper divisors (12952585).

142478303 is a wasteful number, since it uses less digits than its factorization.

142478303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12952584.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 142478303 is about 11936.4275643930. The cubic root of 142478303 is about 522.2954525460.

The spelling of 142478303 in words is "one hundred forty-two million, four hundred seventy-eight thousand, three hundred three".