1246666143 has 8 divisors (see below), whose sum is σ = 1664510848. Its totient is φ = 829966104.

The previous prime is 1246666121. The next prime is 1246666177. The reversal of 1246666143 is 3416666421.

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

It is not a de Polignac number, because 1246666143 - 2¹⁴ = 1246649759 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 (1246666843) 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, 283621 + ... + 287982.

It is an arithmetic number, because the mean of its divisors is an integer number (208063856).

Almost surely, 2^1246666143 is an apocalyptic number.

1246666143 is a deficient number, since it is larger than the sum of its proper divisors (417844705).

1246666143 is an equidigital number, since it uses as much as digits as its factorization.

1246666143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572333.

The product of its digits is 124416, while the sum is 39.

The square root of 1246666143 is about 35308.1597226477. The cubic root of 1246666143 is about 1076.2588153937.

The spelling of 1246666143 in words is "one billion, two hundred forty-six million, six hundred sixty-six thousand, one hundred forty-three".