394320142044041 has 2 divisors, whose sum is σ = 394320142044042. Its totient is φ = 394320142044040.

The previous prime is 394320142043939. The next prime is 394320142044083. The reversal of 394320142044041 is 140440241023493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205122978073225 + 189197163970816 = 14322115^2 + 13754896^2 .

It is an emirp because it is prime and its reverse (140440241023493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394320142044041 - 2¹⁰ = 394320142043017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394320142044041.

It is not a weakly prime, because it can be changed into another prime (394320142046041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197160071022020 + 197160071022021.

It is an arithmetic number, because the mean of its divisors is an integer number (197160071022021).

Almost surely, 2^{394320142044041} is an apocalyptic number.

It is an amenable number.

394320142044041 is a deficient number, since it is larger than the sum of its proper divisors (1).

394320142044041 is an equidigital number, since it uses as much as digits as its factorization.

394320142044041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 394320142044041 in words is "three hundred ninety-four trillion, three hundred twenty billion, one hundred forty-two million, forty-four thousand, forty-one".