121542313045 has 16 divisors (see below), whose sum is σ = 146205259200. Its totient is φ = 96997797504.

The previous prime is 121542313043. The next prime is 121542313091. The reversal of 121542313045 is 540313245121.

It is a cyclic number.

It is not a de Polignac number, because 121542313045 - 2¹ = 121542313043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121542312998 and 121542313016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121542313043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3800281 + ... + 3832129.

It is an arithmetic number, because the mean of its divisors is an integer number (9137828700).

Almost surely, 2^121542313045 is an apocalyptic number.

It is an amenable number.

121542313045 is a deficient number, since it is larger than the sum of its proper divisors (24662946155).

121542313045 is a wasteful number, since it uses less digits than its factorization.

121542313045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33684.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 121542313045 its reverse (540313245121), we get a palindrome (661855558166).

The spelling of 121542313045 in words is "one hundred twenty-one billion, five hundred forty-two million, three hundred thirteen thousand, forty-five".