1240424441 has 6 divisors (see below), whose sum is σ = 1249563630. Its totient is φ = 1231351616.

The previous prime is 1240424429. The next prime is 1240424461. The reversal of 1240424441 is 1444240421.

It can be written as a sum of positive squares in 3 ways, for example, as 129868816 + 1110555625 = 11396^2 + 33325^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1240424441 is a prime.

It is a super-3 number, since 3×1240424441³ (a number of 28 digits) contains 333 as substring.

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 1240424441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240424411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14276 + ... + 51813.

It is an arithmetic number, because the mean of its divisors is an integer number (208260605).

Almost surely, 2^1240424441 is an apocalyptic number.

It is an amenable number.

1240424441 is a deficient number, since it is larger than the sum of its proper divisors (9139189).

1240424441 is an frugal number, since it uses more digits than its factorization.

1240424441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66363 (or 66226 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 1240424441 is about 35219.6598649107. The cubic root of 1240424441 is about 1074.4596356888.

Adding to 1240424441 its reverse (1444240421), we get a palindrome (2684664862).

The spelling of 1240424441 in words is "one billion, two hundred forty million, four hundred twenty-four thousand, four hundred forty-one".