1241240403 has 16 divisors (see below), whose sum is σ = 1839789056. Its totient is φ = 739199520.

The previous prime is 1241240347. The next prime is 1241240419. The reversal of 1241240403 is 3040421421.

It is not a de Polignac number, because 1241240403 - 2³⁰ = 167498579 is a prime.

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 1241240403.

It is not an unprimeable number, because it can be changed into a prime (1241240423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512125 + ... + 514542.

It is an arithmetic number, because the mean of its divisors is an integer number (114986816).

Almost surely, 2^1241240403 is an apocalyptic number.

1241240403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1241240403 is a deficient number, since it is larger than the sum of its proper divisors (598548653).

1241240403 is a wasteful number, since it uses less digits than its factorization.

1241240403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026714.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1241240403 is about 35231.2418600310. The cubic root of 1241240403 is about 1074.6951803504.

Adding to 1241240403 its reverse (3040421421), we get a palindrome (4281661824).

The spelling of 1241240403 in words is "one billion, two hundred forty-one million, two hundred forty thousand, four hundred three".