842053638 has 16 divisors (see below), whose sum is σ = 1711716336. Its totient is φ = 276083040.

The previous prime is 842053607. The next prime is 842053661. The reversal of 842053638 is 836350248.

It is a junction number, because it is equal to n+sod(n) for n = 842053596 and 842053605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149981 + ... + 1150712.

It is an arithmetic number, because the mean of its divisors is an integer number (106982271).

Almost surely, 2^842053638 is an apocalyptic number.

842053638 is an abundant number, since it is smaller than the sum of its proper divisors (869662698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842053638 is a wasteful number, since it uses less digits than its factorization.

842053638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300759.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 842053638 is about 29018.1604861507. The cubic root of 842053638 is about 944.3070937526.

The spelling of 842053638 in words is "eight hundred forty-two million, fifty-three thousand, six hundred thirty-eight".