1243400325530 has 32 divisors (see below), whose sum is σ = 2464404678720. Its totient is φ = 447919909120.

The previous prime is 1243400325521. The next prime is 1243400325571. The reversal of 1243400325530 is 355230043421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52808975 + ... + 52832514.

It is an arithmetic number, because the mean of its divisors is an integer number (77012646210).

Almost surely, 2^{1243400325530} is an apocalyptic number.

1243400325530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243400325530 is a deficient number, since it is larger than the sum of its proper divisors (1221004353190).

1243400325530 is a wasteful number, since it uses less digits than its factorization.

1243400325530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105641614.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 1243400325530 its reverse (355230043421), we get a palindrome (1598630368951).

The spelling of 1243400325530 in words is "one trillion, two hundred forty-three billion, four hundred million, three hundred twenty-five thousand, five hundred thirty".