142878903 has 4 divisors (see below), whose sum is σ = 190505208. Its totient is φ = 95252600.

The previous prime is 142878899. The next prime is 142878913. The reversal of 142878903 is 309878241.

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 142878903 - 2² = 142878899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142878913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23813148 + ... + 23813153.

It is an arithmetic number, because the mean of its divisors is an integer number (47626302).

Almost surely, 2^142878903 is an apocalyptic number.

142878903 is a deficient number, since it is larger than the sum of its proper divisors (47626305).

142878903 is an equidigital number, since it uses as much as digits as its factorization.

142878903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47626304.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 142878903 is about 11953.1963507674. The cubic root of 142878903 is about 522.7844995655.

The spelling of 142878903 in words is "one hundred forty-two million, eight hundred seventy-eight thousand, nine hundred three".