1240212204 has 144 divisors (see below), whose sum is σ = 3920507136. Its totient is φ = 321148800.

The previous prime is 1240212199. The next prime is 1240212217. The reversal of 1240212204 is 4022120421.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1499239 + ... + 1500065.

It is an arithmetic number, because the mean of its divisors is an integer number (27225744).

Almost surely, 2^1240212204 is an apocalyptic number.

1240212204 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 1240212204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1960253568).

1240212204 is an abundant number, since it is smaller than the sum of its proper divisors (2680294932).

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

1240212204 is a wasteful number, since it uses less digits than its factorization.

1240212204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 1391 counting only the distinct ones).

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

The square root of 1240212204 is about 35216.6466887465. The cubic root of 1240212204 is about 1074.3983520697.

Adding to 1240212204 its reverse (4022120421), we get a palindrome (5262332625).

It can be divided in two parts, 1240 and 212204, that added together give a square (213444 = 462²).

The spelling of 1240212204 in words is "one billion, two hundred forty million, two hundred twelve thousand, two hundred four".