121534513 has 8 divisors (see below), whose sum is σ = 130865760. Its totient is φ = 112445760.

The previous prime is 121534499. The next prime is 121534519. The reversal of 121534513 is 315435121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121534513 - 2¹⁷ = 121403441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121534519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59583 + ... + 61588.

It is an arithmetic number, because the mean of its divisors is an integer number (16358220).

Almost surely, 2^121534513 is an apocalyptic number.

It is an amenable number.

121534513 is a deficient number, since it is larger than the sum of its proper divisors (9331247).

121534513 is a wasteful number, since it uses less digits than its factorization.

121534513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121247.

The product of its digits is 1800, while the sum is 25.

The square root of 121534513 is about 11024.2692728362. The cubic root of 121534513 is about 495.3359797731.

Adding to 121534513 its reverse (315435121), we get a palindrome (436969634).

The spelling of 121534513 in words is "one hundred twenty-one million, five hundred thirty-four thousand, five hundred thirteen".