1241887 has 4 divisors (see below), whose sum is σ = 1247680. Its totient is φ = 1236096.

The previous prime is 1241879. The next prime is 1241893. The reversal of 1241887 is 7881421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7881421 = 17 ⋅463613.

It is a cyclic number.

It is not a de Polignac number, because 1241887 - 2³ = 1241879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562 + ... + 3007.

It is an arithmetic number, because the mean of its divisors is an integer number (311920).

2^1241887 is an apocalyptic number.

1241887 is a deficient number, since it is larger than the sum of its proper divisors (5793).

1241887 is an equidigital number, since it uses as much as digits as its factorization.

1241887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5792.

The product of its digits is 3584, while the sum is 31.

The square root of 1241887 is about 1114.3998384781. The cubic root of 1241887 is about 107.4881760927.

The spelling of 1241887 in words is "one million, two hundred forty-one thousand, eight hundred eighty-seven".