1243124434189 has 32 divisors (see below), whose sum is σ = 1499160047616. Its totient is φ = 1016833509120.

The previous prime is 1243124434177. The next prime is 1243124434199. The reversal of 1243124434189 is 9814344213421.

It is not a de Polignac number, because 1243124434189 - 2⁷ = 1243124434061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243124434199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7865704 + ... + 8022190.

It is an arithmetic number, because the mean of its divisors is an integer number (46848751488).

Almost surely, 2^{1243124434189} is an apocalyptic number.

It is an amenable number.

1243124434189 is a deficient number, since it is larger than the sum of its proper divisors (256035613427).

1243124434189 is a wasteful number, since it uses less digits than its factorization.

1243124434189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158385.

The product of its digits is 663552, while the sum is 46.

The spelling of 1243124434189 in words is "one trillion, two hundred forty-three billion, one hundred twenty-four million, four hundred thirty-four thousand, one hundred eighty-nine".