121747039 has 2 divisors, whose sum is σ = 121747040. Its totient is φ = 121747038.

The previous prime is 121747009. The next prime is 121747049. The reversal of 121747039 is 930747121.

It is a strong prime.

It is an emirp because it is prime and its reverse (930747121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121747039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121746995 and 121747013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121747009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60873519 + 60873520.

It is an arithmetic number, because the mean of its divisors is an integer number (60873520).

Almost surely, 2^121747039 is an apocalyptic number.

121747039 is a deficient number, since it is larger than the sum of its proper divisors (1).

121747039 is an equidigital number, since it uses as much as digits as its factorization.

121747039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 121747039 is about 11033.9040688235. The cubic root of 121747039 is about 495.6245410738.

The spelling of 121747039 in words is "one hundred twenty-one million, seven hundred forty-seven thousand, thirty-nine".