1187427 has 8 divisors (see below), whose sum is σ = 1588816. Its totient is φ = 788832.

The previous prime is 1187419. The next prime is 1187429. The reversal of 1187427 is 7247811.

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

It is not a de Polignac number, because 1187427 - 2³ = 1187419 is a prime.

It is a Duffinian number.

1187427 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1187394 and 1187403.

It is not an unprimeable number, because it can be changed into a prime (1187429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (198602).

2^1187427 is an apocalyptic number.

1187427 is a deficient number, since it is larger than the sum of its proper divisors (401389).

1187427 is an equidigital number, since it uses as much as digits as its factorization.

1187427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397.

The product of its digits is 3136, while the sum is 30.

The square root of 1187427 is about 1089.6912406732. The cubic root of 1187427 is about 105.8934196312.

The spelling of 1187427 in words is "one million, one hundred eighty-seven thousand, four hundred twenty-seven".