1243121010430 has 32 divisors (see below), whose sum is σ = 2409923303424. Its totient is φ = 458964043776.

The previous prime is 1243121010427. The next prime is 1243121010487. The reversal of 1243121010430 is 340101213421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1411294 + ... + 2116126.

It is an arithmetic number, because the mean of its divisors is an integer number (75310103232).

Almost surely, 2^{1243121010430} is an apocalyptic number.

1243121010430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243121010430 is a deficient number, since it is larger than the sum of its proper divisors (1166802292994).

1243121010430 is a wasteful number, since it uses less digits than its factorization.

1243121010430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718420.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1243121010430 its reverse (340101213421), we get a palindrome (1583222223851).

The spelling of 1243121010430 in words is "one trillion, two hundred forty-three billion, one hundred twenty-one million, ten thousand, four hundred thirty".