1241505 has 24 divisors (see below), whose sum is σ = 2201472. Its totient is φ = 646944.

The previous prime is 1241491. The next prime is 1241507. The reversal of 1241505 is 5051421.

It is not a de Polignac number, because 1241505 - 2⁴ = 1241489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1241507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1822 + ... + 2408.

It is an arithmetic number, because the mean of its divisors is an integer number (91728).

2^1241505 is an apocalyptic number.

1241505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1241505 is the 705-th heptagonal number.

It is an amenable number.

1241505 is a deficient number, since it is larger than the sum of its proper divisors (959967).

1241505 is a wasteful number, since it uses less digits than its factorization.

1241505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1241505 is about 1114.2284325936. The cubic root of 1241505 is about 107.4771539697.

Adding to 1241505 its reverse (5051421), we get a palindrome (6292926).

The spelling of 1241505 in words is "one million, two hundred forty-one thousand, five hundred five".