1242304398 has 64 divisors (see below), whose sum is σ = 2911507200. Its totient is φ = 391560480.

The previous prime is 1242304391. The next prime is 1242304411. The reversal of 1242304398 is 8934032421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242304391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 831340 + ... + 832832.

It is an arithmetic number, because the mean of its divisors is an integer number (45492300).

Almost surely, 2^1242304398 is an apocalyptic number.

1242304398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242304398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455753600).

1242304398 is an abundant number, since it is smaller than the sum of its proper divisors (1669202802).

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

1242304398 is a wasteful number, since it uses less digits than its factorization.

1242304398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334 (or 2328 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1242304398 is about 35246.3387885891. The cubic root of 1242304398 is about 1075.0021699614.

The spelling of 1242304398 in words is "one billion, two hundred forty-two million, three hundred four thousand, three hundred ninety-eight".