121285673 has 2 divisors, whose sum is σ = 121285674. Its totient is φ = 121285672.

The previous prime is 121285669. The next prime is 121285687. The reversal of 121285673 is 376582121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120187369 + 1098304 = 10963^2 + 1048^2 .

It is an emirp because it is prime and its reverse (376582121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121285673 - 2² = 121285669 is a prime.

It is not a weakly prime, because it can be changed into another prime (121285613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60642836 + 60642837.

It is an arithmetic number, because the mean of its divisors is an integer number (60642837).

Almost surely, 2^121285673 is an apocalyptic number.

It is an amenable number.

121285673 is a deficient number, since it is larger than the sum of its proper divisors (1).

121285673 is an equidigital number, since it uses as much as digits as its factorization.

121285673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 121285673 is about 11012.9774811356. The cubic root of 121285673 is about 494.9976845792.

The spelling of 121285673 in words is "one hundred twenty-one million, two hundred eighty-five thousand, six hundred seventy-three".