842661356 has 12 divisors (see below), whose sum is σ = 1510624920. Its totient is φ = 411054240.

The previous prime is 842661329. The next prime is 842661359. The reversal of 842661356 is 653166248.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (842661359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568926 + ... + 2569253.

It is an arithmetic number, because the mean of its divisors is an integer number (125885410).

Almost surely, 2^842661356 is an apocalyptic number.

It is an amenable number.

842661356 is a deficient number, since it is larger than the sum of its proper divisors (667963564).

842661356 is a wasteful number, since it uses less digits than its factorization.

842661356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138224 (or 5138222 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 842661356 is about 29028.6299366677. The cubic root of 842661356 is about 944.5342108828.

The spelling of 842661356 in words is "eight hundred forty-two million, six hundred sixty-one thousand, three hundred fifty-six".