842352681 has 4 divisors (see below), whose sum is σ = 1123136912. Its totient is φ = 561568452.

The previous prime is 842352653. The next prime is 842352701. The reversal of 842352681 is 186253248.

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 842352681 - 2⁹ = 842352169 is a prime.

It is a super-2 number, since 2×842352681² = 1419116078375775522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842352611) 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, 140392111 + ... + 140392116.

It is an arithmetic number, because the mean of its divisors is an integer number (280784228).

Almost surely, 2^842352681 is an apocalyptic number.

It is an amenable number.

842352681 is a deficient number, since it is larger than the sum of its proper divisors (280784231).

842352681 is a wasteful number, since it uses less digits than its factorization.

842352681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280784230.

The product of its digits is 92160, while the sum is 39.

The square root of 842352681 is about 29023.3127158152. The cubic root of 842352681 is about 944.4188661272.

The spelling of 842352681 in words is "eight hundred forty-two million, three hundred fifty-two thousand, six hundred eighty-one".