121341545 has 16 divisors (see below), whose sum is σ = 160151040. Its totient is φ = 87697344.

The previous prime is 121341541. The next prime is 121341569. The reversal of 121341545 is 545143121.

It is a cyclic number.

It is not a de Polignac number, because 121341545 - 2² = 121341541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121341541) 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, 16805 + ... + 22914.

It is an arithmetic number, because the mean of its divisors is an integer number (10009440).

Almost surely, 2^121341545 is an apocalyptic number.

It is an amenable number.

121341545 is a deficient number, since it is larger than the sum of its proper divisors (38809495).

121341545 is a wasteful number, since it uses less digits than its factorization.

121341545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39784.

The product of its digits is 2400, while the sum is 26.

The square root of 121341545 is about 11015.5138327724. The cubic root of 121341545 is about 495.0736821922.

Adding to 121341545 its reverse (545143121), we get a palindrome (666484666).

The spelling of 121341545 in words is "one hundred twenty-one million, three hundred forty-one thousand, five hundred forty-five".