84142877 has 32 divisors (see below), whose sum is σ = 110880000. Its totient is φ = 61959168.

The previous prime is 84142871. The next prime is 84142889. The reversal of 84142877 is 77824148.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 84142877 - 2⁶ = 84142813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84142871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168374 + ... + 168872.

It is an arithmetic number, because the mean of its divisors is an integer number (3465000).

Almost surely, 2^84142877 is an apocalyptic number.

It is an amenable number.

84142877 is a deficient number, since it is larger than the sum of its proper divisors (26737123).

84142877 is a wasteful number, since it uses less digits than its factorization.

84142877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its digits is 100352, while the sum is 41.

The square root of 84142877 is about 9172.9426576208. The cubic root of 84142877 is about 438.2000799086.

The spelling of 84142877 in words is "eighty-four million, one hundred forty-two thousand, eight hundred seventy-seven".