123247734349 has 4 divisors (see below), whose sum is σ = 123873357564. Its totient is φ = 122622111136.

The previous prime is 123247734343. The next prime is 123247734353. The reversal of 123247734349 is 943437742321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113410665225 + 9837069124 = 336765^2 + 99182^2 .

It is a cyclic number.

It is not a de Polignac number, because 123247734349 - 2¹⁷ = 123247603277 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123247734343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312811312 + ... + 312811705.

It is an arithmetic number, because the mean of its divisors is an integer number (30968339391).

Almost surely, 2^123247734349 is an apocalyptic number.

It is an amenable number.

123247734349 is a deficient number, since it is larger than the sum of its proper divisors (625623215).

123247734349 is an equidigital number, since it uses as much as digits as its factorization.

123247734349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625623214.

The product of its digits is 3048192, while the sum is 49.

The spelling of 123247734349 in words is "one hundred twenty-three billion, two hundred forty-seven million, seven hundred thirty-four thousand, three hundred forty-nine".