121740589 has 2 divisors, whose sum is σ = 121740590. Its totient is φ = 121740588.

The previous prime is 121740571. The next prime is 121740607. The reversal of 121740589 is 985047121.

It is a balanced prime because it is at equal distance from previous prime (121740571) and next prime (121740607).

It can be written as a sum of positive squares in only one way, i.e., 99102025 + 22638564 = 9955^2 + 4758^2 .

It is a cyclic number.

It is not a de Polignac number, because 121740589 - 2⁷ = 121740461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121740539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60870294 + 60870295.

It is an arithmetic number, because the mean of its divisors is an integer number (60870295).

Almost surely, 2^121740589 is an apocalyptic number.

It is an amenable number.

121740589 is a deficient number, since it is larger than the sum of its proper divisors (1).

121740589 is an equidigital number, since it uses as much as digits as its factorization.

121740589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 121740589 is about 11033.6117839989. The cubic root of 121740589 is about 495.6157884044.

The spelling of 121740589 in words is "one hundred twenty-one million, seven hundred forty thousand, five hundred eighty-nine".