121532403 has 8 divisors (see below), whose sum is σ = 162363600. Its totient is φ = 80861408.

The previous prime is 121532401. The next prime is 121532423. The reversal of 121532403 is 304235121.

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 121532403 - 2¹ = 121532401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121532403.

It is not an unprimeable number, because it can be changed into a prime (121532401) 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, 38268 + ... + 41321.

It is an arithmetic number, because the mean of its divisors is an integer number (20295450).

Almost surely, 2^121532403 is an apocalyptic number.

121532403 is a deficient number, since it is larger than the sum of its proper divisors (40831197).

121532403 is an equidigital number, since it uses as much as digits as its factorization.

121532403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80101.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121532403 is about 11024.1735744681. The cubic root of 121532403 is about 495.3331131938. Note that the first 3 decimals are identical.

Adding to 121532403 its reverse (304235121), we get a palindrome (425767524).

The spelling of 121532403 in words is "one hundred twenty-one million, five hundred thirty-two thousand, four hundred three".