121403005 has 8 divisors (see below), whose sum is σ = 146326752. Its totient is φ = 96693648.

The previous prime is 121403003. The next prime is 121403033. The reversal of 121403005 is 500304121.

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 121403005 - 2¹ = 121403003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121403005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121403003) 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, 52347 + ... + 54616.

It is an arithmetic number, because the mean of its divisors is an integer number (18290844).

Almost surely, 2^121403005 is an apocalyptic number.

It is an amenable number.

121403005 is a deficient number, since it is larger than the sum of its proper divisors (24923747).

121403005 is a wasteful number, since it uses less digits than its factorization.

121403005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107195.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 121403005 is about 11018.3031815248. The cubic root of 121403005 is about 495.1572537142.

Adding to 121403005 its reverse (500304121), we get a palindrome (621707126).

The spelling of 121403005 in words is "one hundred twenty-one million, four hundred three thousand, five".