842127111 has 20 divisors (see below), whose sum is σ = 1437706512. Its totient is φ = 481215168.

The previous prime is 842127109. The next prime is 842127149. The reversal of 842127111 is 111721248.

842127111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 842127111 - 2¹ = 842127109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842127311) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 742050 + ... + 743183.

Almost surely, 2^842127111 is an apocalyptic number.

842127111 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

842127111 is a deficient number, since it is larger than the sum of its proper divisors (595579401).

842127111 is a wasteful number, since it uses less digits than its factorization.

842127111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485252 (or 1485243 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 842127111 is about 29019.4264416098. The cubic root of 842127111 is about 944.3345579797.

Adding to 842127111 its reverse (111721248), we get a palindrome (953848359).

The spelling of 842127111 in words is "eight hundred forty-two million, one hundred twenty-seven thousand, one hundred eleven".