142879943 has 4 divisors (see below), whose sum is σ = 150399960. Its totient is φ = 135359928.

The previous prime is 142879889. The next prime is 142879967. The reversal of 142879943 is 349978241.

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 142879943 - 2²⁰ = 141831367 is a prime.

It is a super-2 number, since 2×142879943² = 40829356223366498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142879343) 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, 3759980 + ... + 3760017.

It is an arithmetic number, because the mean of its divisors is an integer number (37599990).

Almost surely, 2^142879943 is an apocalyptic number.

142879943 is a deficient number, since it is larger than the sum of its proper divisors (7520017).

142879943 is an equidigital number, since it uses as much as digits as its factorization.

142879943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520016.

The product of its digits is 435456, while the sum is 47.

The square root of 142879943 is about 11953.2398536966. The cubic root of 142879943 is about 522.7857679929.

The spelling of 142879943 in words is "one hundred forty-two million, eight hundred seventy-nine thousand, nine hundred forty-three".