1243452330 has 64 divisors (see below), whose sum is σ = 3365412480. Its totient is φ = 326633472.

The previous prime is 1243452281. The next prime is 1243452341. The reversal of 1243452330 is 332543421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1243452294 and 1243452303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16279 + ... + 52458.

It is an arithmetic number, because the mean of its divisors is an integer number (52584570).

Almost surely, 2^1243452330 is an apocalyptic number.

1243452330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243452330 is an abundant number, since it is smaller than the sum of its proper divisors (2121960150).

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

1243452330 is a wasteful number, since it uses less digits than its factorization.

1243452330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68820 (or 68814 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 1243452330 is about 35262.6194432575. The cubic root of 1243452330 is about 1075.3331810224. Note that the first 3 decimals are identical.

Adding to 1243452330 its reverse (332543421), we get a palindrome (1575995751).

The spelling of 1243452330 in words is "one billion, two hundred forty-three million, four hundred fifty-two thousand, three hundred thirty".