1187441 has 8 divisors (see below), whose sum is σ = 1240320. Its totient is φ = 1135728.

The previous prime is 1187429. The next prime is 1187453. The reversal of 1187441 is 1447811.

It is an interprime number because it is at equal distance from previous prime (1187429) and next prime (1187453).

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 1187441 - 2¹⁴ = 1171057 is a prime.

It is a super-2 number, since 2×1187441² = 2820032256962, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1187441.

It is not an unprimeable number, because it can be changed into a prime (1187411) 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, 2240 + ... + 2718.

It is an arithmetic number, because the mean of its divisors is an integer number (155040).

2^1187441 is an apocalyptic number.

It is an amenable number.

1187441 is a deficient number, since it is larger than the sum of its proper divisors (52879).

1187441 is an equidigital number, since it uses as much as digits as its factorization.

1187441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583.

The product of its digits is 896, while the sum is 26.

The square root of 1187441 is about 1089.6976644923. The cubic root of 1187441 is about 105.8938357977.

The spelling of 1187441 in words is "one million, one hundred eighty-seven thousand, four hundred forty-one".