121409047 has 2 divisors, whose sum is σ = 121409048. Its totient is φ = 121409046.

The previous prime is 121409039. The next prime is 121409191. The reversal of 121409047 is 740904121.

It is a weak prime.

It is an emirp because it is prime and its reverse (740904121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121409047 - 2³ = 121409039 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 (121409027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60704523 + 60704524.

It is an arithmetic number, because the mean of its divisors is an integer number (60704524).

Almost surely, 2^121409047 is an apocalyptic number.

121409047 is a deficient number, since it is larger than the sum of its proper divisors (1).

121409047 is an equidigital number, since it uses as much as digits as its factorization.

121409047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 121409047 is about 11018.5773582618. The cubic root of 121409047 is about 495.1654679274.

The spelling of 121409047 in words is "one hundred twenty-one million, four hundred nine thousand, forty-seven".