842454116690 has 16 divisors (see below), whose sum is σ = 1516435805592. Its totient is φ = 336977558784.

The previous prime is 842454116689. The next prime is 842454116701. The reversal of 842454116690 is 96611454248.

It can be written as a sum of positive squares in 4 ways, for example, as 681092030089 + 161362086601 = 825283^2 + 401699^2 .

It is a super-2 number, since 2×842454116690² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438602 + ... + 1370138.

Almost surely, 2^842454116690 is an apocalyptic number.

842454116690 is a deficient number, since it is larger than the sum of its proper divisors (673981688902).

842454116690 is a wasteful number, since it uses less digits than its factorization.

842454116690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021981.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 842454116690 in words is "eight hundred forty-two billion, four hundred fifty-four million, one hundred sixteen thousand, six hundred ninety".