1214021424 has 160 divisors (see below), whose sum is σ = 3930034176. Its totient is φ = 313724160.

The previous prime is 1214021423. The next prime is 1214021429. The reversal of 1214021424 is 4241204121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1214021424.

It is not an unprimeable number, because it can be changed into a prime (1214021423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 838269 + ... + 839715.

Almost surely, 2^1214021424 is an apocalyptic number.

1214021424 is a gapful number since it is divisible by the number (14) 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 1214021424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965017088).

1214021424 is an abundant number, since it is smaller than the sum of its proper divisors (2716012752).

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

1214021424 is a wasteful number, since it uses less digits than its factorization.

1214021424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1214021424 is about 34842.8102196135. The cubic root of 1214021424 is about 1066.7814378240.

Adding to 1214021424 its reverse (4241204121), we get a palindrome (5455225545).

The spelling of 1214021424 in words is "one billion, two hundred fourteen million, twenty-one thousand, four hundred twenty-four".