121490273 has 2 divisors, whose sum is σ = 121490274. Its totient is φ = 121490272.

The previous prime is 121490227. The next prime is 121490287. The reversal of 121490273 is 372094121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95101504 + 26388769 = 9752^2 + 5137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121490273 is a prime.

It is a super-2 number, since 2×121490273² = 29519772867229058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_6921704 and since 121490273 and 6921704 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (121490293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60745136 + 60745137.

It is an arithmetic number, because the mean of its divisors is an integer number (60745137).

Almost surely, 2^121490273 is an apocalyptic number.

It is an amenable number.

121490273 is a deficient number, since it is larger than the sum of its proper divisors (1).

121490273 is an equidigital number, since it uses as much as digits as its factorization.

121490273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 121490273 is about 11022.2626080129. The cubic root of 121490273 is about 495.2758697607.

The spelling of 121490273 in words is "one hundred twenty-one million, four hundred ninety thousand, two hundred seventy-three".