842629 has 4 divisors (see below), whose sum is σ = 844480. Its totient is φ = 840780.

The previous prime is 842627. The next prime is 842657. The reversal of 842629 is 926248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 842629 - 2¹ = 842627 is a prime.

It is a Duffinian number.

842629 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 842629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292 + ... + 1330.

It is an arithmetic number, because the mean of its divisors is an integer number (211120).

2⁸⁴²⁶²⁹ is an apocalyptic number.

It is an amenable number.

842629 is a deficient number, since it is larger than the sum of its proper divisors (1851).

842629 is a wasteful number, since it uses less digits than its factorization.

842629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850.

The product of its digits is 6912, while the sum is 31.

The square root of 842629 is about 917.9482556223. The cubic root of 842629 is about 94.4522121511.

The spelling of 842629 in words is "eight hundred forty-two thousand, six hundred twenty-nine".