442154320997 has 2 divisors, whose sum is σ = 442154320998. Its totient is φ = 442154320996.

The previous prime is 442154320973. The next prime is 442154321017. The reversal of 442154320997 is 799023451244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340245889636 + 101908431361 = 583306^2 + 319231^2 .

It is a cyclic number.

It is not a de Polignac number, because 442154320997 - 2¹⁰ = 442154319973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442154320957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221077160498 + 221077160499.

It is an arithmetic number, because the mean of its divisors is an integer number (221077160499).

Almost surely, 2^442154320997 is an apocalyptic number.

It is an amenable number.

442154320997 is a deficient number, since it is larger than the sum of its proper divisors (1).

442154320997 is an equidigital number, since it uses as much as digits as its factorization.

442154320997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 442154320997 in words is "four hundred forty-two billion, one hundred fifty-four million, three hundred twenty thousand, nine hundred ninety-seven".