842722138755 has 384 divisors, whose sum is σ = 1933673472000. Its totient is φ = 345543045120.

The previous prime is 842722138733. The next prime is 842722138771. The reversal of 842722138755 is 557831227248.

842722138755 is a `hidden beast` number, since 84 + 272 + 213 + 87 + 5 + 5 = 666.

It is not a de Polignac number, because 842722138755 - 2⁶ = 842722138691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 257632770 + ... + 257636040.

It is an arithmetic number, because the mean of its divisors is an integer number (5035608000).

Almost surely, 2^842722138755 is an apocalyptic number.

842722138755 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

842722138755 is an abundant number, since it is smaller than the sum of its proper divisors (1090951333245).

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

842722138755 is a wasteful number, since it uses less digits than its factorization.

842722138755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3411 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The spelling of 842722138755 in words is "eight hundred forty-two billion, seven hundred twenty-two million, one hundred thirty-eight thousand, seven hundred fifty-five".