842529 has 4 divisors (see below), whose sum is σ = 1123376. Its totient is φ = 561684.

The previous prime is 842521. The next prime is 842531. The reversal of 842529 is 925248.

842529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 842529 - 2³ = 842521 is a prime.

It is a D-number.

It is a Duffinian number.

842529 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 842496 and 842505.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842529.

It is not an unprimeable number, because it can be changed into a prime (842521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140419 + ... + 140424.

It is an arithmetic number, because the mean of its divisors is an integer number (280844).

2⁸⁴²⁵²⁹ is an apocalyptic number.

It is an amenable number.

842529 is a deficient number, since it is larger than the sum of its proper divisors (280847).

842529 is a wasteful number, since it uses less digits than its factorization.

842529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280846.

The product of its digits is 5760, while the sum is 30.

The square root of 842529 is about 917.8937847050. The cubic root of 842529 is about 94.4484755937.

The spelling of 842529 in words is "eight hundred forty-two thousand, five hundred twenty-nine".