842019127 has 4 divisors (see below), whose sum is σ = 844726896. Its totient is φ = 839311360.

The previous prime is 842019071. The next prime is 842019169. The reversal of 842019127 is 721910248.

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 842019127 - 2⁷ = 842018999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 842019092 and 842019101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842013127) 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, 1353418 + ... + 1354039.

It is an arithmetic number, because the mean of its divisors is an integer number (211181724).

Almost surely, 2^842019127 is an apocalyptic number.

842019127 is a deficient number, since it is larger than the sum of its proper divisors (2707769).

842019127 is a wasteful number, since it uses less digits than its factorization.

842019127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707768.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 842019127 is about 29017.5658351971. The cubic root of 842019127 is about 944.2941929800.

The spelling of 842019127 in words is "eight hundred forty-two million, nineteen thousand, one hundred twenty-seven".