836730842 has 4 divisors (see below), whose sum is σ = 1255096266. Its totient is φ = 418365420.

The previous prime is 836730841. The next prime is 836730863. The reversal of 836730842 is 248037638.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 785736961 + 50993881 = 28031^2 + 7141^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 836730842.

It is not an unprimeable number, because it can be changed into a prime (836730841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209182709 + ... + 209182712.

Almost surely, 2^836730842 is an apocalyptic number.

836730842 is a deficient number, since it is larger than the sum of its proper divisors (418365424).

836730842 is a wasteful number, since it uses less digits than its factorization.

836730842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418365423.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 836730842 is about 28926.3001782115. The cubic root of 836730842 is about 942.3131660420.

The spelling of 836730842 in words is "eight hundred thirty-six million, seven hundred thirty thousand, eight hundred forty-two".