121413145 has 16 divisors (see below), whose sum is σ = 166711680. Its totient is φ = 83153664.

The previous prime is 121413139. The next prime is 121413163. The reversal of 121413145 is 541314121.

It is a cyclic number.

It is not a de Polignac number, because 121413145 - 2¹⁹ = 120888857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37761 + ... + 40849.

It is an arithmetic number, because the mean of its divisors is an integer number (10419480).

Almost surely, 2^121413145 is an apocalyptic number.

It is an amenable number.

121413145 is a deficient number, since it is larger than the sum of its proper divisors (45298535).

121413145 is a wasteful number, since it uses less digits than its factorization.

121413145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224.

The product of its digits is 480, while the sum is 22.

The square root of 121413145 is about 11018.7633153635. The cubic root of 121413145 is about 495.1710390807.

Adding to 121413145 its reverse (541314121), we get a palindrome (662727266).

The spelling of 121413145 in words is "one hundred twenty-one million, four hundred thirteen thousand, one hundred forty-five".