1214022420 has 72 divisors (see below), whose sum is σ = 3965814216. Its totient is φ = 298835712.

The previous prime is 1214022401. The next prime is 1214022437. The reversal of 1214022420 is 242204121.

1214022420 is a `hidden beast` number, since 1 + 21 + 402 + 242 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12152196 + 1201870224 = 3486^2 + 34668^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1214022393 and 1214022402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257067 + ... + 261746.

It is an arithmetic number, because the mean of its divisors is an integer number (55080753).

Almost surely, 2^1214022420 is an apocalyptic number.

1214022420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214022420 is an abundant number, since it is smaller than the sum of its proper divisors (2751791796).

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

1214022420 is a wasteful number, since it uses less digits than its factorization.

1214022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518841 (or 518836 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1214022420 is about 34842.8245123727. The cubic root of 1214022420 is about 1066.7817295580.

Adding to 1214022420 its reverse (242204121), we get a palindrome (1456226541).

The spelling of 1214022420 in words is "one billion, two hundred fourteen million, twenty-two thousand, four hundred twenty".