121245073 has 2 divisors, whose sum is σ = 121245074. Its totient is φ = 121245072.

The previous prime is 121245049. The next prime is 121245083. The reversal of 121245073 is 370542121.

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., 114211969 + 7033104 = 10687^2 + 2652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121245073 is a prime.

It is not a weakly prime, because it can be changed into another prime (121245083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60622536 + 60622537.

It is an arithmetic number, because the mean of its divisors is an integer number (60622537).

Almost surely, 2^121245073 is an apocalyptic number.

It is an amenable number.

121245073 is a deficient number, since it is larger than the sum of its proper divisors (1).

121245073 is an equidigital number, since it uses as much as digits as its factorization.

121245073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 121245073 is about 11011.1340469545. The cubic root of 121245073 is about 494.9424454390.

Adding to 121245073 its reverse (370542121), we get a palindrome (491787194).

The spelling of 121245073 in words is "one hundred twenty-one million, two hundred forty-five thousand, seventy-three".