151121143 has 4 divisors (see below), whose sum is σ = 160010640. Its totient is φ = 142231648.

The previous prime is 151121141. The next prime is 151121153. The reversal of 151121143 is 341121151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151121143 - 2¹ = 151121141 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 151121143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151121141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4444723 + ... + 4444756.

It is an arithmetic number, because the mean of its divisors is an integer number (40002660).

Almost surely, 2^151121143 is an apocalyptic number.

151121143 is a deficient number, since it is larger than the sum of its proper divisors (8889497).

151121143 is an equidigital number, since it uses as much as digits as its factorization.

151121143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889496.

The product of its digits is 120, while the sum is 19.

The square root of 151121143 is about 12293.1339779570. The cubic root of 151121143 is about 532.6497692708.

Adding to 151121143 its reverse (341121151), we get a palindrome (492242294).

The spelling of 151121143 in words is "one hundred fifty-one million, one hundred twenty-one thousand, one hundred forty-three".