121953307 has 8 divisors (see below), whose sum is σ = 142220000. Its totient is φ = 104531112.

The previous prime is 121953281. The next prime is 121953317. The reversal of 121953307 is 703359121.

It is a de Polignac number, because none of the positive numbers 2^k-121953307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121953317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177432 + ... + 178117.

It is an arithmetic number, because the mean of its divisors is an integer number (17777500).

Almost surely, 2^121953307 is an apocalyptic number.

121953307 is a deficient number, since it is larger than the sum of its proper divisors (20266693).

121953307 is an frugal number, since it uses more digits than its factorization.

121953307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355570 (or 355556 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 121953307 is about 11043.2471221104. The cubic root of 121953307 is about 495.9042845027.

The spelling of 121953307 in words is "one hundred twenty-one million, nine hundred fifty-three thousand, three hundred seven".