121424403 has 8 divisors (see below), whose sum is σ = 162030528. Its totient is φ = 80883944.

The previous prime is 121424377. The next prime is 121424437. The reversal of 121424403 is 304424121.

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 121424403 - 2⁹ = 121423891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121424403.

It is not an unprimeable number, because it can be changed into a prime (121424483) 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, 11925 + ... + 19622.

It is an arithmetic number, because the mean of its divisors is an integer number (20253816).

Almost surely, 2^121424403 is an apocalyptic number.

121424403 is a deficient number, since it is larger than the sum of its proper divisors (40606125).

121424403 is a wasteful number, since it uses less digits than its factorization.

121424403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32833.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 121424403 is about 11019.2741593991. The cubic root of 121424403 is about 495.1863434732.

Adding to 121424403 its reverse (304424121), we get a palindrome (425848524).

The spelling of 121424403 in words is "one hundred twenty-one million, four hundred twenty-four thousand, four hundred three".