1241661 has 4 divisors (see below), whose sum is σ = 1655552. Its totient is φ = 827772.

The previous prime is 1241659. The next prime is 1241677. The reversal of 1241661 is 1661421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1241661 - 2¹ = 1241659 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241651) 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, 206941 + ... + 206946.

It is an arithmetic number, because the mean of its divisors is an integer number (413888).

2^1241661 is an apocalyptic number.

It is an amenable number.

1241661 is a deficient number, since it is larger than the sum of its proper divisors (413891).

1241661 is an equidigital number, since it uses as much as digits as its factorization.

1241661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413890.

The product of its digits is 288, while the sum is 21.

The square root of 1241661 is about 1114.2984339933. The cubic root of 1241661 is about 107.4816554239.

The spelling of 1241661 in words is "one million, two hundred forty-one thousand, six hundred sixty-one".