142179847 has 4 divisors (see below), whose sum is σ = 143052280. Its totient is φ = 141307416.

The previous prime is 142179839. The next prime is 142179893. The reversal of 142179847 is 748971241.

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 142179847 - 2³ = 142179839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142179647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435972 + ... + 436297.

It is an arithmetic number, because the mean of its divisors is an integer number (35763070).

Almost surely, 2^142179847 is an apocalyptic number.

142179847 is a deficient number, since it is larger than the sum of its proper divisors (872433).

142179847 is an equidigital number, since it uses as much as digits as its factorization.

142179847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872432.

The product of its digits is 112896, while the sum is 43.

The square root of 142179847 is about 11923.9191124395. The cubic root of 142179847 is about 521.9305053230.

The spelling of 142179847 in words is "one hundred forty-two million, one hundred seventy-nine thousand, eight hundred forty-seven".