121654149 has 8 divisors (see below), whose sum is σ = 162879552. Its totient is φ = 80765760.

The previous prime is 121654123. The next prime is 121654151. The reversal of 121654149 is 941456121.

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

It is not a de Polignac number, because 121654149 - 2¹³ = 121645957 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 (121654109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83409 + ... + 84854.

It is an arithmetic number, because the mean of its divisors is an integer number (20359944).

Almost surely, 2^121654149 is an apocalyptic number.

It is an amenable number.

121654149 is a deficient number, since it is larger than the sum of its proper divisors (41225403).

121654149 is a wasteful number, since it uses less digits than its factorization.

121654149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168507.

The product of its digits is 8640, while the sum is 33.

The square root of 121654149 is about 11029.6939667427. The cubic root of 121654149 is about 495.4984592194.

The spelling of 121654149 in words is "one hundred twenty-one million, six hundred fifty-four thousand, one hundred forty-nine".