1230402220 has 24 divisors (see below), whose sum is σ = 2588393808. Its totient is φ = 491294400.

The previous prime is 1230402203. The next prime is 1230402221. The reversal of 1230402220 is 222040321.

It is a junction number, because it is equal to n+sod(n) for n = 1230402194 and 1230402203.

It is not an unprimeable number, because it can be changed into a prime (1230402221) 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, 42451 + ... + 65290.

It is an arithmetic number, because the mean of its divisors is an integer number (107849742).

Almost surely, 2^1230402220 is an apocalyptic number.

1230402220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230402220 is an abundant number, since it is smaller than the sum of its proper divisors (1357991588).

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

1230402220 is a wasteful number, since it uses less digits than its factorization.

1230402220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108321 (or 108319 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1230402220 is about 35077.0896740308. The cubic root of 1230402220 is about 1071.5580469647.

Adding to 1230402220 its reverse (222040321), we get a palindrome (1452442541).

The spelling of 1230402220 in words is "one billion, two hundred thirty million, four hundred two thousand, two hundred twenty".