121534516 has 24 divisors (see below), whose sum is σ = 216560960. Its totient is φ = 59666112.

The previous prime is 121534499. The next prime is 121534519. The reversal of 121534516 is 615435121.

It is a congruent 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, 117136 + ... + 118168.

Almost surely, 2^121534516 is an apocalyptic number.

It is an amenable number.

121534516 is a deficient number, since it is larger than the sum of its proper divisors (95026444).

121534516 is a wasteful number, since it uses less digits than its factorization.

121534516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543 (or 1541 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 121534516 is about 11024.2694088996. The cubic root of 121534516 is about 495.3359838488.

Adding to 121534516 its reverse (615435121), we get a palindrome (736969637).

The spelling of 121534516 in words is "one hundred twenty-one million, five hundred thirty-four thousand, five hundred sixteen".