1187471 has 2 divisors, whose sum is σ = 1187472. Its totient is φ = 1187470.

The previous prime is 1187453. The next prime is 1187479. The reversal of 1187471 is 1747811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1187471 is a prime.

It is a super-3 number, since 3×1187471³ = 5023313598831864333, which contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593735 + 593736.

It is an arithmetic number, because the mean of its divisors is an integer number (593736).

2^1187471 is an apocalyptic number.

1187471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187471 is an equidigital number, since it uses as much as digits as its factorization.

1187471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 29.

The square root of 1187471 is about 1089.7114296914. The cubic root of 1187471 is about 105.8947275721.

The spelling of 1187471 in words is "one million, one hundred eighty-seven thousand, four hundred seventy-one".