1224041240 has 32 divisors (see below), whose sum is σ = 2775790080. Its totient is φ = 485759232.

The previous prime is 1224041227. The next prime is 1224041243. The reversal of 1224041240 is 421404221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224041243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115397 + ... + 125556.

It is an arithmetic number, because the mean of its divisors is an integer number (86743440).

Almost surely, 2^1224041240 is an apocalyptic number.

1224041240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224041240 is an abundant number, since it is smaller than the sum of its proper divisors (1551748840).

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

1224041240 is a wasteful number, since it uses less digits than its factorization.

1224041240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241091 (or 241087 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1224041240 is about 34986.3007475783. The cubic root of 1224041240 is about 1069.7082618039.

Adding to 1224041240 its reverse (421404221), we get a palindrome (1645445461).

The spelling of 1224041240 in words is "one billion, two hundred twenty-four million, forty-one thousand, two hundred forty".