842040247385 has 16 divisors (see below), whose sum is σ = 1013614070976. Its totient is φ = 671522657088.

The previous prime is 842040247309. The next prime is 842040247393. The reversal of 842040247385 is 583742040248.

It is a cyclic number.

It is not a de Polignac number, because 842040247385 - 2¹⁴ = 842040231001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7112042 + ... + 7229468.

It is an arithmetic number, because the mean of its divisors is an integer number (63350879436).

Almost surely, 2^842040247385 is an apocalyptic number.

It is an amenable number.

842040247385 is a deficient number, since it is larger than the sum of its proper divisors (171573823591).

842040247385 is a wasteful number, since it uses less digits than its factorization.

842040247385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121912.

The product of its (nonzero) digits is 1720320, while the sum is 47.

The spelling of 842040247385 in words is "eight hundred forty-two billion, forty million, two hundred forty-seven thousand, three hundred eighty-five".