1224143020 has 24 divisors (see below), whose sum is σ = 2706001200. Its totient is φ = 463885632.

The previous prime is 1224143003. The next prime is 1224143029. The reversal of 1224143020 is 203414221.

It is a super-2 number, since 2×1224143020² = 2997052266829440800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1224143029) 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, 1610335 + ... + 1611094.

It is an arithmetic number, because the mean of its divisors is an integer number (112750050).

Almost surely, 2^1224143020 is an apocalyptic number.

1224143020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224143020 is an abundant number, since it is smaller than the sum of its proper divisors (1481858180).

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

1224143020 is a wasteful number, since it uses less digits than its factorization.

1224143020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221457 (or 3221455 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1224143020 is about 34987.7552866714. The cubic root of 1224143020 is about 1069.7379100123.

Adding to 1224143020 its reverse (203414221), we get a palindrome (1427557241).

The spelling of 1224143020 in words is "one billion, two hundred twenty-four million, one hundred forty-three thousand, twenty".