842649135 has 16 divisors (see below), whose sum is σ = 1376925696. Its totient is φ = 439850528.

The previous prime is 842649131. The next prime is 842649139. The reversal of 842649135 is 531946248.

It is an interprime number because it is at equal distance from previous prime (842649131) and next prime (842649139).

It is a cyclic number.

It is not a de Polignac number, because 842649135 - 2² = 842649131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842649131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596919 + ... + 598328.

It is an arithmetic number, because the mean of its divisors is an integer number (86057856).

Almost surely, 2^842649135 is an apocalyptic number.

842649135 is a deficient number, since it is larger than the sum of its proper divisors (534276561).

842649135 is a wasteful number, since it uses less digits than its factorization.

842649135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195302.

The product of its digits is 207360, while the sum is 42.

The square root of 842649135 is about 29028.4194368209. The cubic root of 842649135 is about 944.5296447115.

The spelling of 842649135 in words is "eight hundred forty-two million, six hundred forty-nine thousand, one hundred thirty-five".