1197085143 has 4 divisors (see below), whose sum is σ = 1596113528. Its totient is φ = 798056760.

The previous prime is 1197085129. The next prime is 1197085147. The reversal of 1197085143 is 3415807911.

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

It is not a de Polignac number, because 1197085143 - 2¹² = 1197081047 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 (1197085147) 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, 199514188 + ... + 199514193.

It is an arithmetic number, because the mean of its divisors is an integer number (399028382).

Almost surely, 2^1197085143 is an apocalyptic number.

1197085143 is a deficient number, since it is larger than the sum of its proper divisors (399028385).

1197085143 is an equidigital number, since it uses as much as digits as its factorization.

1197085143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399028384.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 1197085143 is about 34598.9182345344. The cubic root of 1197085143 is about 1061.7974555302.

The spelling of 1197085143 in words is "one billion, one hundred ninety-seven million, eighty-five thousand, one hundred forty-three".