842251705 has 8 divisors (see below), whose sum is σ = 1027271304. Its totient is φ = 662755200.

The previous prime is 842251693. The next prime is 842251733. The reversal of 842251705 is 507152248.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 49716601 + 792535104 = 7051^2 + 28152^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 842251705 - 2¹³ = 842243513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380436 + ... + 1381045.

It is an arithmetic number, because the mean of its divisors is an integer number (128408913).

Almost surely, 2^842251705 is an apocalyptic number.

It is an amenable number.

842251705 is a deficient number, since it is larger than the sum of its proper divisors (185019599).

842251705 is a wasteful number, since it uses less digits than its factorization.

842251705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761547.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 842251705 is about 29021.5730965777. The cubic root of 842251705 is about 944.3811275994.

The spelling of 842251705 in words is "eight hundred forty-two million, two hundred fifty-one thousand, seven hundred five".