121451603 has 8 divisors (see below), whose sum is σ = 149479008. Its totient is φ = 96093504.

The previous prime is 121451581. The next prime is 121451641. The reversal of 121451603 is 306154121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121451603 - 2⁸ = 121451347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121451683) 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, 667226 + ... + 667407.

It is an arithmetic number, because the mean of its divisors is an integer number (18684876).

Almost surely, 2^121451603 is an apocalyptic number.

121451603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121451603 is a deficient number, since it is larger than the sum of its proper divisors (28027405).

121451603 is a wasteful number, since it uses less digits than its factorization.

121451603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334653.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 121451603 is about 11020.5082913630. The cubic root of 121451603 is about 495.2233158956.

The spelling of 121451603 in words is "one hundred twenty-one million, four hundred fifty-one thousand, six hundred three".