842681357 has 4 divisors (see below), whose sum is σ = 963064416. Its totient is φ = 722298300.

The previous prime is 842681353. The next prime is 842681423. The reversal of 842681357 is 753186248.

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 842681357 - 2² = 842681353 is a prime.

It is a super-2 number, since 2×842681357² = 1420223738870722898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842681353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60191519 + ... + 60191532.

It is an arithmetic number, because the mean of its divisors is an integer number (240766104).

Almost surely, 2^842681357 is an apocalyptic number.

It is an amenable number.

842681357 is a deficient number, since it is larger than the sum of its proper divisors (120383059).

842681357 is a wasteful number, since it uses less digits than its factorization.

842681357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120383058.

The product of its digits is 322560, while the sum is 44.

The square root of 842681357 is about 29028.9744393425. The cubic root of 842681357 is about 944.5416838252.

The spelling of 842681357 in words is "eight hundred forty-two million, six hundred eighty-one thousand, three hundred fifty-seven".