840294964141 has 4 divisors (see below), whose sum is σ = 854070291484. Its totient is φ = 826519636800.

The previous prime is 840294964133. The next prime is 840294964147. The reversal of 840294964141 is 141469492048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109398208516 + 730896755625 = 330754^2 + 854925^2 .

It is a cyclic number.

It is not a de Polignac number, because 840294964141 - 2³ = 840294964133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840294964147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6887663580 + ... + 6887663701.

It is an arithmetic number, because the mean of its divisors is an integer number (213517572871).

Almost surely, 2^840294964141 is an apocalyptic number.

It is an amenable number.

840294964141 is a deficient number, since it is larger than the sum of its proper divisors (13775327343).

840294964141 is a wasteful number, since it uses less digits than its factorization.

840294964141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13775327342.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 840294964141 in words is "eight hundred forty billion, two hundred ninety-four million, nine hundred sixty-four thousand, one hundred forty-one".