1214404420 has 48 divisors (see below), whose sum is σ = 2629369008. Its totient is φ = 470845440.

The previous prime is 1214404397. The next prime is 1214404487. The reversal of 1214404420 is 244044121.

It can be written as a sum of positive squares in 8 ways, for example, as 150209536 + 1064194884 = 12256^2 + 32622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1214404391 and 1214404400.

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, 124024 + ... + 133456.

It is an arithmetic number, because the mean of its divisors is an integer number (54778521).

Almost surely, 2^1214404420 is an apocalyptic number.

1214404420 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 1214404420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314684504).

1214404420 is an abundant number, since it is smaller than the sum of its proper divisors (1414964588).

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

1214404420 is a wasteful number, since it uses less digits than its factorization.

1214404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640 (or 9638 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1214404420 is about 34848.3058411740. The cubic root of 1214404420 is about 1066.8936077462.

Adding to 1214404420 its reverse (244044121), we get a palindrome (1458448541).

The spelling of 1214404420 in words is "one billion, two hundred fourteen million, four hundred four thousand, four hundred twenty".