1241616440 has 64 divisors (see below), whose sum is σ = 2896020000. Its totient is φ = 478517760.

The previous prime is 1241616421. The next prime is 1241616449. The reversal of 1241616440 is 446161421.

It is a super-2 number, since 2×1241616440² = 3083222768156547200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241616449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800786 + ... + 802334.

Almost surely, 2^1241616440 is an apocalyptic number.

1241616440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1241616440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448010000).

1241616440 is an abundant number, since it is smaller than the sum of its proper divisors (1654403560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1241616440 is a wasteful number, since it uses less digits than its factorization.

1241616440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1241616440 is about 35236.5781539581. The cubic root of 1241616440 is about 1074.8036966237.

Adding to 1241616440 its reverse (446161421), we get a palindrome (1687777861).

The spelling of 1241616440 in words is "one billion, two hundred forty-one million, six hundred sixteen thousand, four hundred forty".