121673441 has 2 divisors, whose sum is σ = 121673442. Its totient is φ = 121673440.

The previous prime is 121673417. The next prime is 121673443. The reversal of 121673441 is 144376121.

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., 118048225 + 3625216 = 10865^2 + 1904^2 .

It is a cyclic number.

It is not a de Polignac number, because 121673441 - 2²² = 117479137 is a prime.

Together with 121673443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121673443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60836720 + 60836721.

It is an arithmetic number, because the mean of its divisors is an integer number (60836721).

Almost surely, 2^121673441 is an apocalyptic number.

It is an amenable number.

121673441 is a deficient number, since it is larger than the sum of its proper divisors (1).

121673441 is an equidigital number, since it uses as much as digits as its factorization.

121673441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 121673441 is about 11030.5684803640. The cubic root of 121673441 is about 495.5246499990.

The spelling of 121673441 in words is "one hundred twenty-one million, six hundred seventy-three thousand, four hundred forty-one".