1197421667 has 8 divisors (see below), whose sum is σ = 1357401360. Its totient is φ = 1047137760.

The previous prime is 1197421657. The next prime is 1197421691. The reversal of 1197421667 is 7661247911.

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

It is a cyclic number.

It is not a de Polignac number, because 1197421667 - 2⁴ = 1197421651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197421637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2423684 + ... + 2424177.

It is an arithmetic number, because the mean of its divisors is an integer number (169675170).

Almost surely, 2^1197421667 is an apocalyptic number.

1197421667 is a deficient number, since it is larger than the sum of its proper divisors (159979693).

1197421667 is a wasteful number, since it uses less digits than its factorization.

1197421667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847893.

The product of its digits is 127008, while the sum is 44.

The square root of 1197421667 is about 34603.7811084280. The cubic root of 1197421667 is about 1061.8969435382.

The spelling of 1197421667 in words is "one billion, one hundred ninety-seven million, four hundred twenty-one thousand, six hundred sixty-seven".