1451213143 has 8 divisors (see below), whose sum is σ = 1537894512. Its totient is φ = 1364678016.

The previous prime is 1451213123. The next prime is 1451213161. The reversal of 1451213143 is 3413121541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1451213143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451213123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15780 + ... + 56137.

It is an arithmetic number, because the mean of its divisors is an integer number (192236814).

Almost surely, 2^1451213143 is an apocalyptic number.

1451213143 is a deficient number, since it is larger than the sum of its proper divisors (86681369).

1451213143 is a wasteful number, since it uses less digits than its factorization.

1451213143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73121.

The product of its digits is 1440, while the sum is 25.

The square root of 1451213143 is about 38094.7915468769. The cubic root of 1451213143 is about 1132.1667625375.

Adding to 1451213143 its reverse (3413121541), we get a palindrome (4864334684).

The spelling of 1451213143 in words is "one billion, four hundred fifty-one million, two hundred thirteen thousand, one hundred forty-three".