1742223124489 has 3 divisors (see below), whose sum is σ = 1742224444423. Its totient is φ = 1742221804556.

The previous prime is 1742223124459. The next prime is 1742223124493. The reversal of 1742223124489 is 9844213222471.

The square root of 1742223124489 is 1319933.

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., 536417084025 + 1205806040464 = 732405^2 + 1098092^2 .

It is not a de Polignac number, because 1742223124489 - 2²⁵ = 1742189570057 is a prime.

It is a super-2 number, since 2×1742223124489² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1742223124429) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 659967 + ... + 1979899.

Almost surely, 2^{1742223124489} is an apocalyptic number.

1742223124489 is the 1319933-rd square number.

1742223124489 is the 659967-th centered octagonal number.

It is an amenable number.

1742223124489 is a deficient number, since it is larger than the sum of its proper divisors (1319934).

1742223124489 is an frugal number, since it uses more digits than its factorization.

1742223124489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639866 (or 1319933 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

Multiplying 1742223124489 by its sum of digits (49), we get a square (85368933099961 = 9239531²).

The spelling of 1742223124489 in words is "one trillion, seven hundred forty-two billion, two hundred twenty-three million, one hundred twenty-four thousand, four hundred eighty-nine".