1224434040420 has 48 divisors (see below), whose sum is σ = 3429130521600. Its totient is φ = 326447629056.

The previous prime is 1224434040391. The next prime is 1224434040469. The reversal of 1224434040420 is 240404344221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1838257 + ... + 2414136.

It is an arithmetic number, because the mean of its divisors is an integer number (71440219200).

Almost surely, 2^{1224434040420} is an apocalyptic number.

1224434040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224434040420 is an abundant number, since it is smaller than the sum of its proper divisors (2204696481180).

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

1224434040420 is a wasteful number, since it uses less digits than its factorization.

1224434040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257204 (or 4257202 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 1224434040420 its reverse (240404344221), we get a palindrome (1464838384641).

The spelling of 1224434040420 in words is "one trillion, two hundred twenty-four billion, four hundred thirty-four million, forty thousand, four hundred twenty".