121304143 has 8 divisors (see below), whose sum is σ = 122093568. Its totient is φ = 120517944.

The previous prime is 121304123. The next prime is 121304153. The reversal of 121304143 is 341403121.

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 121304143 - 2²¹ = 119206991 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 121304143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121304123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140130 + ... + 140992.

It is an arithmetic number, because the mean of its divisors is an integer number (15261696).

Almost surely, 2^121304143 is an apocalyptic number.

121304143 is a deficient number, since it is larger than the sum of its proper divisors (789425).

121304143 is an equidigital number, since it uses as much as digits as its factorization.

121304143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 121304143 is about 11013.8160053634. The cubic root of 121304143 is about 495.0228102266.

Adding to 121304143 its reverse (341403121), we get a palindrome (462707264).

The spelling of 121304143 in words is "one hundred twenty-one million, three hundred four thousand, one hundred forty-three".