121430709 has 12 divisors (see below), whose sum is σ = 175500000. Its totient is φ = 80907624.

The previous prime is 121430693. The next prime is 121430713. The reversal of 121430709 is 907034121.

It is not a de Polignac number, because 121430709 - 2⁴ = 121430693 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121430759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21792 + ... + 26790.

It is an arithmetic number, because the mean of its divisors is an integer number (14625000).

Almost surely, 2^121430709 is an apocalyptic number.

It is an amenable number.

121430709 is a deficient number, since it is larger than the sum of its proper divisors (54069291).

121430709 is a wasteful number, since it uses less digits than its factorization.

121430709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7704 (or 7701 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 121430709 is about 11019.5602906831. The cubic root of 121430709 is about 495.1949155860.

The spelling of 121430709 in words is "one hundred twenty-one million, four hundred thirty thousand, seven hundred nine".