1197242943 has 16 divisors (see below), whose sum is σ = 1793863680. Its totient is φ = 704731104.

The previous prime is 1197242941. The next prime is 1197242947. The reversal of 1197242943 is 3492427911.

It is a happy number.

It is not a de Polignac number, because 1197242943 - 2¹ = 1197242941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1197242895 and 1197242904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197242941) 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 15 ways as a sum of consecutive naturals, for example, 666463 + ... + 668256.

It is an arithmetic number, because the mean of its divisors is an integer number (112116480).

Almost surely, 2^1197242943 is an apocalyptic number.

1197242943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1197242943 is a deficient number, since it is larger than the sum of its proper divisors (596620737).

1197242943 is a wasteful number, since it uses less digits than its factorization.

1197242943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334758.

The product of its digits is 108864, while the sum is 42.

The square root of 1197242943 is about 34601.1985775060. The cubic root of 1197242943 is about 1061.8441089304.

The spelling of 1197242943 in words is "one billion, one hundred ninety-seven million, two hundred forty-two thousand, nine hundred forty-three".