1241621 has 4 divisors (see below), whose sum is σ = 1248972. Its totient is φ = 1234272.

The previous prime is 1241587. The next prime is 1241627. The reversal of 1241621 is 1261421.

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 1144900 + 96721 = 1070^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241621 - 2⁶ = 1241557 is a prime.

It is a super-3 number, since 3×1241621³ = 5742333383651778183, which contains 333 as substring.

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 1241621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241627) 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, 3416 + ... + 3761.

It is an arithmetic number, because the mean of its divisors is an integer number (312243).

2^1241621 is an apocalyptic number.

It is an amenable number.

1241621 is a deficient number, since it is larger than the sum of its proper divisors (7351).

1241621 is an equidigital number, since it uses as much as digits as its factorization.

1241621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350.

The product of its digits is 96, while the sum is 17.

The square root of 1241621 is about 1114.2804853357. The cubic root of 1241621 is about 107.4805012408.

It can be divided in two parts, 1241 and 621, that multiplied together give a triangular number (770661 = T₁₂₄₁).

The spelling of 1241621 in words is "one million, two hundred forty-one thousand, six hundred twenty-one".