121649495 has 16 divisors (see below), whose sum is σ = 167633280. Its totient is φ = 83815200.

The previous prime is 121649459. The next prime is 121649503. The reversal of 121649495 is 594946121.

It is not a de Polignac number, because 121649495 - 2¹² = 121645399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57161 + ... + 59250.

It is an arithmetic number, because the mean of its divisors is an integer number (10477080).

Almost surely, 2^121649495 is an apocalyptic number.

121649495 is a deficient number, since it is larger than the sum of its proper divisors (45983785).

121649495 is a wasteful number, since it uses less digits than its factorization.

121649495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116446.

The product of its digits is 77760, while the sum is 41.

The square root of 121649495 is about 11029.4829887896. The cubic root of 121649495 is about 495.4921405440.

The spelling of 121649495 in words is "one hundred twenty-one million, six hundred forty-nine thousand, four hundred ninety-five".