3781241 has 4 divisors (see below), whose sum is σ = 3796212. Its totient is φ = 3766272.

The previous prime is 3781237. The next prime is 3781243. The reversal of 3781241 is 1421873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3385600 + 395641 = 1840^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 3781241 - 2² = 3781237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3781241.

It is not an unprimeable number, because it can be changed into a prime (3781243) 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, 7100 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (949053).

Almost surely, 2^3781241 is an apocalyptic number.

It is an amenable number.

3781241 is a deficient number, since it is larger than the sum of its proper divisors (14971).

3781241 is a wasteful number, since it uses less digits than its factorization.

3781241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14970.

The product of its digits is 1344, while the sum is 26.

The square root of 3781241 is about 1944.5413340940. The cubic root of 3781241 is about 155.7918685056.

The spelling of 3781241 in words is "three million, seven hundred eighty-one thousand, two hundred forty-one".