1243030416345 has 72 divisors (see below), whose sum is σ = 2253544494552. Its totient is φ = 633749760000.

The previous prime is 1243030416337. The next prime is 1243030416401. The reversal of 1243030416345 is 5436140303421.

1243030416345 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 0 + 304 + 1 + 6 + 345 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 31205929104 + 1211824487241 = 176652^2 + 1100829^2 .

It is not a de Polignac number, because 1243030416345 - 2³ = 1243030416337 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3659745 + ... + 3984945.

It is an arithmetic number, because the mean of its divisors is an integer number (31299229091).

Almost surely, 2^{1243030416345} is an apocalyptic number.

1243030416345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1243030416345 is a deficient number, since it is larger than the sum of its proper divisors (1010514078207).

1243030416345 is a wasteful number, since it uses less digits than its factorization.

1243030416345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325371 (or 325339 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 1243030416345 its reverse (5436140303421), we get a palindrome (6679170719766).

The spelling of 1243030416345 in words is "one trillion, two hundred forty-three billion, thirty million, four hundred sixteen thousand, three hundred forty-five".