1230140519689 has 3 divisors (see below), whose sum is σ = 1230141628807. Its totient is φ = 1230139410572.

The previous prime is 1230140519611. The next prime is 1230140519737. The reversal of 1230140519689 is 9869150410321.

It is a happy number.

The square root of 1230140519689 is 1109117.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 936259436025 + 293881083664 = 967605^2 + 542108^2 .

It is not a de Polignac number, because 1230140519689 - 2¹⁹ = 1230139995401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230140519609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 554559 + ... + 1663675.

Almost surely, 2^{1230140519689} is an apocalyptic number.

1230140519689 is the 1109117-th square number.

1230140519689 is the 554559-th centered octagonal number.

It is an amenable number.

1230140519689 is a deficient number, since it is larger than the sum of its proper divisors (1109118).

1230140519689 is an frugal number, since it uses more digits than its factorization.

1230140519689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218234 (or 1109117 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

Multiplying 1230140519689 by its sum of digits (49), we get a square (60276885464761 = 7763819²).

The spelling of 1230140519689 in words is "one trillion, two hundred thirty billion, one hundred forty million, five hundred nineteen thousand, six hundred eighty-nine".