121540527 has 16 divisors (see below), whose sum is σ = 180576000. Its totient is φ = 80794872.

The previous prime is 121540513. The next prime is 121540541. The reversal of 121540527 is 725045121.

It is an interprime number because it is at equal distance from previous prime (121540513) and next prime (121540541).

It is not a de Polignac number, because 121540527 - 2⁸ = 121540271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 121540527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121540577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3424 + ... + 15962.

It is an arithmetic number, because the mean of its divisors is an integer number (11286000).

Almost surely, 2^121540527 is an apocalyptic number.

121540527 is a deficient number, since it is larger than the sum of its proper divisors (59035473).

121540527 is a wasteful number, since it uses less digits than its factorization.

121540527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907 (or 12901 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 121540527 is about 11024.5420313045. The cubic root of 121540527 is about 495.3441500214.

Adding to 121540527 its reverse (725045121), we get a palindrome (846585648).

The spelling of 121540527 in words is "one hundred twenty-one million, five hundred forty thousand, five hundred twenty-seven".