121302545 has 16 divisors (see below), whose sum is σ = 179155200. Its totient is φ = 76780224.

The previous prime is 121302541. The next prime is 121302557. The reversal of 121302545 is 545203121.

It is a cyclic number.

It is not a de Polignac number, because 121302545 - 2² = 121302541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121302545.

It is not an unprimeable number, because it can be changed into a prime (121302541) 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, 132845 + ... + 133754.

It is an arithmetic number, because the mean of its divisors is an integer number (11197200).

Almost surely, 2^121302545 is an apocalyptic number.

It is an amenable number.

121302545 is a deficient number, since it is larger than the sum of its proper divisors (57852655).

121302545 is a wasteful number, since it uses less digits than its factorization.

121302545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266624.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 121302545 is about 11013.7434598778. The cubic root of 121302545 is about 495.0206364896.

Adding to 121302545 its reverse (545203121), we get a palindrome (666505666).

The spelling of 121302545 in words is "one hundred twenty-one million, three hundred two thousand, five hundred forty-five".