121449153 has 16 divisors (see below), whose sum is σ = 185867136. Its totient is φ = 69098880.

The previous prime is 121449143. The next prime is 121449161. The reversal of 121449153 is 351944121.

It is not a de Polignac number, because 121449153 - 2⁴ = 121449137 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121449153.

It is not an unprimeable number, because it can be changed into a prime (121449143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7518 + ... + 17303.

It is an arithmetic number, because the mean of its divisors is an integer number (11616696).

Almost surely, 2^121449153 is an apocalyptic number.

It is an amenable number.

121449153 is a deficient number, since it is larger than the sum of its proper divisors (64417983).

121449153 is a wasteful number, since it uses less digits than its factorization.

121449153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25064.

The product of its digits is 4320, while the sum is 30.

The square root of 121449153 is about 11020.3971344049. The cubic root of 121449153 is about 495.2199858852.

The spelling of 121449153 in words is "one hundred twenty-one million, four hundred forty-nine thousand, one hundred fifty-three".