1204121143 has 8 divisors (see below), whose sum is σ = 1274502320. Its totient is φ = 1134440640.

The previous prime is 1204121141. The next prime is 1204121161. The reversal of 1204121143 is 3411214021.

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 1204121143 - 2¹ = 1204121141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 1204121143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204121141) 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, 171630 + ... + 178507.

It is an arithmetic number, because the mean of its divisors is an integer number (159312790).

Almost surely, 2^1204121143 is an apocalyptic number.

1204121143 is a deficient number, since it is larger than the sum of its proper divisors (70381177).

1204121143 is a wasteful number, since it uses less digits than its factorization.

1204121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350337.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1204121143 is about 34700.4487434961. The cubic root of 1204121143 is about 1063.8736703308.

Adding to 1204121143 its reverse (3411214021), we get a palindrome (4615335164).

The spelling of 1204121143 in words is "one billion, two hundred four million, one hundred twenty-one thousand, one hundred forty-three".