2123056729394 has 8 divisors (see below), whose sum is σ = 3184606154028. Its totient is φ = 1061521344720.

The previous prime is 2123056729393. The next prime is 2123056729411. The reversal of 2123056729394 is 4939276503212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2121500032369 + 1556697025 = 1456537^2 + 39455^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2123056729393) 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 3 ways as a sum of consecutive naturals, for example, 3123437 + ... + 3741920.

Almost surely, 2^{2123056729394} is an apocalyptic number.

2123056729394 is a deficient number, since it is larger than the sum of its proper divisors (1061549424634).

2123056729394 is a wasteful number, since it uses less digits than its factorization.

2123056729394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7019980.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 2123056729394 in words is "two trillion, one hundred twenty-three billion, fifty-six million, seven hundred twenty-nine thousand, three hundred ninety-four".