121743287 has 2 divisors, whose sum is σ = 121743288. Its totient is φ = 121743286.

The previous prime is 121743217. The next prime is 121743329. The reversal of 121743287 is 782347121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121743287 - 2⁸ = 121743031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121743217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60871643 + 60871644.

It is an arithmetic number, because the mean of its divisors is an integer number (60871644).

Almost surely, 2^121743287 is an apocalyptic number.

121743287 is a deficient number, since it is larger than the sum of its proper divisors (1).

121743287 is an equidigital number, since it uses as much as digits as its factorization.

121743287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 121743287 is about 11033.7340460970. The cubic root of 121743287 is about 495.6194496362.

The spelling of 121743287 in words is "one hundred twenty-one million, seven hundred forty-three thousand, two hundred eighty-seven".