121654418 has 8 divisors (see below), whose sum is σ = 183279180. Its totient is φ = 60561360.

The previous prime is 121654417. The next prime is 121654487. The reversal of 121654418 is 814456121.

It can be written as a sum of positive squares in 2 ways, for example, as 120406729 + 1247689 = 10973^2 + 1117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121654411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132353 + ... + 133268.

Almost surely, 2^121654418 is an apocalyptic number.

121654418 is a deficient number, since it is larger than the sum of its proper divisors (61624762).

121654418 is a wasteful number, since it uses less digits than its factorization.

121654418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265852.

The product of its digits is 7680, while the sum is 32.

The square root of 121654418 is about 11029.7061610906. The cubic root of 121654418 is about 495.4988244323.

The spelling of 121654418 in words is "one hundred twenty-one million, six hundred fifty-four thousand, four hundred eighteen".