1214212420 has 48 divisors (see below), whose sum is σ = 2708754048. Its totient is φ = 455605760.

The previous prime is 1214212357. The next prime is 1214212421. The reversal of 1214212420 is 242124121.

It is not an unprimeable number, because it can be changed into a prime (1214212421) 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, 99999 + ... + 111481.

It is an arithmetic number, because the mean of its divisors is an integer number (56432376).

Almost surely, 2^1214212420 is an apocalyptic number.

1214212420 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 1214212420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354377024).

1214212420 is an abundant number, since it is smaller than the sum of its proper divisors (1494541628).

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

1214212420 is a wasteful number, since it uses less digits than its factorization.

1214212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11820 (or 11818 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1214212420 is about 34845.5509355212. The cubic root of 1214212420 is about 1066.8373787103.

Adding to 1214212420 its reverse (242124121), we get a palindrome (1456336541).

The spelling of 1214212420 in words is "one billion, two hundred fourteen million, two hundred twelve thousand, four hundred twenty".