842019129 has 72 divisors (see below), whose sum is σ = 1494230400. Its totient is φ = 447455232.

The previous prime is 842019071. The next prime is 842019169. The reversal of 842019129 is 921910248.

It is not a de Polignac number, because 842019129 - 2¹³ = 842010937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 842019093 and 842019102.

It is not an unprimeable number, because it can be changed into a prime (842019169) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1875097 + ... + 1875545.

It is an arithmetic number, because the mean of its divisors is an integer number (20753200).

Almost surely, 2^842019129 is an apocalyptic number.

It is an amenable number.

842019129 is a deficient number, since it is larger than the sum of its proper divisors (652211271).

842019129 is a wasteful number, since it uses less digits than its factorization.

842019129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 842019129 is about 29017.5658696590. The cubic root of 842019129 is about 944.2941937277.

The spelling of 842019129 in words is "eight hundred forty-two million, nineteen thousand, one hundred twenty-nine".