1187371 has 4 divisors (see below), whose sum is σ = 1189552. Its totient is φ = 1185192.

The previous prime is 1187369. The next prime is 1187383. The reversal of 1187371 is 1737811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1737811 = 23 ⋅75557.

It is a cyclic number.

It is not a de Polignac number, because 1187371 - 2¹ = 1187369 is a prime.

It is a Duffinian number.

1187371 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1187311) 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, 505 + ... + 1621.

It is an arithmetic number, because the mean of its divisors is an integer number (297388).

2^1187371 is an apocalyptic number.

1187371 is a deficient number, since it is larger than the sum of its proper divisors (2181).

1187371 is a wasteful number, since it uses less digits than its factorization.

1187371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180.

The product of its digits is 1176, while the sum is 28.

The square root of 1187371 is about 1089.6655450183. The cubic root of 1187371 is about 105.8917549325.

The spelling of 1187371 in words is "one million, one hundred eighty-seven thousand, three hundred seventy-one".