121541504 has 32 divisors (see below), whose sum is σ = 276726000. Its totient is φ = 52088832.

The previous prime is 121541501. The next prime is 121541509. The reversal of 121541504 is 405145121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 121541504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121541501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66929 + ... + 68720.

Almost surely, 2^121541504 is an apocalyptic number.

121541504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121541504 is an abundant number, since it is smaller than the sum of its proper divisors (155184496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121541504 is an equidigital number, since it uses as much as digits as its factorization.

121541504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135670 (or 135658 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 121541504 is about 11024.5863414461. The cubic root of 121541504 is about 495.3454772877.

Adding to 121541504 its reverse (405145121), we get a palindrome (526686625).

The spelling of 121541504 in words is "one hundred twenty-one million, five hundred forty-one thousand, five hundred four".