84142873 has 4 divisors (see below), whose sum is σ = 86099728. Its totient is φ = 82186020.

The previous prime is 84142871. The next prime is 84142889. The reversal of 84142873 is 37824148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84142873 - 2¹ = 84142871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84142871) 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 in 3 ways as a sum of consecutive naturals, for example, 978363 + ... + 978448.

It is an arithmetic number, because the mean of its divisors is an integer number (21524932).

Almost surely, 2^84142873 is an apocalyptic number.

It is an amenable number.

84142873 is a deficient number, since it is larger than the sum of its proper divisors (1956855).

84142873 is a wasteful number, since it uses less digits than its factorization.

84142873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956854.

The product of its digits is 43008, while the sum is 37.

The square root of 84142873 is about 9172.9424395883. The cubic root of 84142873 is about 438.2000729649.

It can be divided in two parts, 8 and 4142873, that added together give a triangular number (4142881 = T₂₈₇₈).

The spelling of 84142873 in words is "eighty-four million, one hundred forty-two thousand, eight hundred seventy-three".